MXPA97006064A

MXPA97006064A - Arrangement of blind holes that provide alternatives for the connection patterns in an electrical connection box, and protective plate arrangement to install dinami loads

Info

Publication number: MXPA97006064A
Application number: MXPA/A/1997/006064A
Authority: MX
Inventors: William Jorgensen Robert
Original assignee: Hubbell Incorporated
Priority date: 1996-08-22
Filing date: 1997-08-08
Publication date: 1998-02-01

Abstract

The present invention relates to an arrangement of blind holes for an electrical connection box including a housing having at least one substantially flat side wall, a pair of first blind hole structures placed in separate spaces in the side wall, with the first blind hole structures defining a first circular removable disk and a second annular removable disk surrounding and containing the first circular removable disk, the first and second removable disk have separate centers, so that the second removable disk is defined in eccentric relation to The first removable disk and the first and second removable disks of each blind hole structure are adapted to be removed selectively to create a commercial size hole to pass a conductor of any two sizes of the side wall, and a second structure of blind holes arranged in the side wall between and separated from the pri mere structures of blind holes and containing only the first removable disk. The housing further has a plurality of side walls with a pair of opposite side walls having a plurality of coplanar and spaced mounting ears, respectively disposed at opposite ends, adjacent the opposite side walls for attachment of a protective cover having holes. or mounting slots corresponding to the housing, to install a dynamic load to the protective cover

Description

ARRANGEMENT OF BLIND HOLES THAT PROVIDE ALTERNATIVES FOR THE CONNECTION PATTERNS IN A CONNECTION BOX ELECTRICAL SYSTEMS, AND PROTECTIVE PLATE ARRANGEMENT FOR INSTALLING DYNAMIC LOADS BACKGROUND OF THE INVENTION Field of the invention In general, the present invention relates to conventional electrical boxes that have eccentric blind holes for connections with conductors of any of two sizes and, more particularly, relates to an array of blind holes that provide a greater choice of connection patterns in a circuit of electrical connections and to the union of a protective cover to it, for the installation of dynamic loads, without the use of a protective cover.

Description of the prior art The boxes for the electric connections have been isolated with conventional and eccentric blind holes to pass electrical conauctores having different sizes. The conventional blind hole usually has a diameter to accept a commercial size con tactor up to half an inch while the eccentric blind hole usually has a diameter to accept a conductor at commercial size of three quarters of an inch. The eccentric blind hole is, therefore, larger in its diameter and by definition does not share the same central point as the conventional internal blind hole. Over time, various devices having conventional and / or eccentric blind holes have been developed. Representative examples of these devices are described in US Pat. No. 05, 522 of Par et al., US Pat. No. 4. , 229, 614 tímolik, US Patent No. 4, 640, 433 e Jorgensen et al., US Patent NO. 5, 191, 171 of tordordwell and Canadian patent O. 1, 254, 295A ae ubell, me. Most of these devices of the aforementioned patents disclose electrical boxes for use "< a m i" i o r-r- > c r- 1 c ¡n < 2-n r-ana reri "iafo r - a" l \ r "-> blind holes in the rear wall This arrangement of holes blind to the prior art seems to be a common practice in the field of connection boxes The problem with these prior art insulators is that none of these seem to provide an electrical outlet that increases the amount of options for connection patterns to the conactors.

Another problem with these boxes for connections to the prior art is that they do not comply with the change proposed recently for the NEC (National Electrical Code) which requires that connection boxes priced for the use of public goods and services are also priced to support fans for ceiling. Generally, two mounting holes may be suitable for installing static light fixtures, however, this is not suitable for the dynamic loads of ceiling fans. This is especially true if the fan is unbalanced and will fly eccentrically. Two points define a line and three points define a plane. Therefore, to classify a ceiling fan, at least three (and preferably four) mounting holes / slots are essential to install the protective cover to the junction box to prevent the introduction of an axis that will allow a turn ov on ry -rrvmyya, r- "lac Aro-i ac ri to the assembly of the box. In general, all accessories support covers or protective covers that are attached to the connection box with two and only two mounting screws, although The protective covers usually have four mounting holes / grooves.This is mainly due to other reasons, most of the boxes only have two mounting ears even if the protective covers have four holes or mounting slots and thus They use two holes or slots diagonal mounts.If the protective cover is rotated ninety degrees, then the other two mounting holes / slots will be aligned with the mounting ears for the attachment of the protective cover, and second, in those situations where four mounting ears are formed or provided in the junction box, only Two of the mounting ears are used because the other two mounting ears never align with the holes or mounting slots of the protective cover, regardless of the orientation of the protective cover. Consequently, there is a need for a connection box that has a blind hole arrangement that solves the aforementioned problem in the devices of the prior art without introducing new problems in the prior art.

"Llinr ri ooc: t- r- ca - rtp rt rr nn f ri f bc river MRSN 1 ~ a ~ io river so arranged that the four oriíicios / orotectora cover slots are in alignment with. Four mounting ears regardless of the specific orientation of the protective cover.

SUMMARY ae THE INVENTION The present invention provides a box for electrical connections designed arrangement of blind or aiscos removióles holes allowing a greater choice ae pattern for ae connection conauctores ae aiferentes sizes and for binding ae a protective cover through ae face open the junction box for the installation of a dynamic load to this to meet the needs mentioned above. The arrangement of the blind holes present invention includes ei, ei conventional blind hole and ae ae commercial size three quarters of pulgaaa, eccentric blind hole commercial size puigaaa half, blind holes are diieyidü ?; > In this case, it is an electrical outlet to a certain size to increase the options of the pattern of electrical connections in the field, and by means of which the total number of boxes that would otherwise be necessary without the present invention? the assembly arrangement to attach a protective cover to the r- a -t a -i n r- 'l p o l a m C? C I P I pn rH r-p a ^? f or i a c rio m? tapo not tai way arregiaaas in the box to align and be reoistro with four holes or correspondentes grooves in the protective cover, regardless of the orientation specified ae pi? iprra protective? e so that the protective cover is pueae unite Is it safe to use four stages to avoid a graa? The eccentric movement that would tend to bend and break the attachment of the ears to the mounting of the cable to an electrical load, such as a ceiling fan, is installed on the protective cover. Accordingly, the present invention is directed to an arrangement of blind holes for an electrical connection box and the means for attaching a protective cover, regardless of its orientation, to the connection box in such a way that a dynamic load can be installed on it. ia protective cover. The arrangement of blind holes comprises: a housing having at least one side wall which is substantially planar; (B) a pair of first structures blind holes spaced on the side wall, each first structure of blind holes defining a first removable circular disc and a second removable annular disc surrounding the first removable circular disk ei first and second removable disks have Separate centers so that the second disk removable co defined ° n ° i '*, i' ^ ° x, ° pt *: ir3 ^ o the removed or removable, by means of which the first and second removable disks of each first blind hole structure can be selectively removed to create a hole for receiving a conductor of any of the two sizes; (Or a second structure of blind holes disposed in the side wall and spaced apart from the first blind hole structures and containing only the first removable disk, The housing preferably includes a plurality of side walls, each connected to a rear wall. at a periphery thereof and extending outwards from and in substantially substantially perpendicular relation to the rear wall with substantially flat side walls and with internal and external surfaces composed with a leading edge defining a flat front opening of the housing. in the same way, it is substantially flat and has opposite inner and outer surfaces.As an example, each side wall is about 17.7dm (four inches and one quarter) in length.In addition the first and second blind holes are respectively defined by areas of weakness along the first and second lines stamped substantially ular. The first die cut line is completely contained within and separated from the second die cut line. Per aiameter to receive a half-inch commercial size driver, while the second die cut line has a second diameter to receive a commercial size conductor of three quarters of an inch. The holes that are created when removing the first and second removable discs along the first and second die cut lines are for receiving conductors having diameters of about one-half inch and three-quarters of an inch. The second blind hole of each first blind hole structure further includes zones of maximum amplitude and zones of minimum amplitude on opposite sides of the first blind hole along a diameter of the second blind hole. The first blind hole has a first bridge member that interrupts the first punched line and constitutes the only union between the first blind hole and the second blind hole in each first blind hole structure and constitutes the only union between the first blind hole and each of the walls of the housing in each of the second structures of blind holes. The second blind hole has a second bridge member that interrupts the second die-cut line and constitutes the only junction between the second blind hole and each of the walls of the elevator. The bridge members help retain the first and second removable insulation in the area. for the premature elimination of these. Likewise, the piuraiiaad of lateral pareaes to the housing includes a pair of opposite side walls separated one from the other, and for the union of the protective cover to the housing to support an anamic load to the protective cover, to one side walls. Opposites have a pair of mounting ears attached to the front edge of these, with each of the mounting ears arranged adjacent a pair of opposite ends of each of the opposite side walls. The mounting lugs on one of the opposite side walls are aligned through and extend towards and in a common plane with the mounting lugs which lie on the other of the opposite side walls. In addition, each of the ears extends substantially substantially perpendicular to each front edge of the opposite and adjacent side walls extending toward each other. Each mounting ear contains a hole for receiving a fastener therethrough, for securing a protective cover to the housing. Likewise, the holes of the mounting ears are symmetrical with respect to the axes, so that a protective cover m r o r r a r r i-i i i r r; r a n p r a rio tnr > "Nra"> correspondents will be aligned with the holes and the ears assembly and import the specific orientation of the protective cover.The arrangement of the mounting ears and the respective holes in the present invention are aaaptan to support a protective cover, To install dynamic loads as a ventilator for techno Finally, the dimension of the lateral side of a quarter to the electrical housing for electrical connections to the present invention allows the necessary space and shape for blind holes of commercial size. of 3-quarters inch and a commercially sized half-inch blind hole This four-and-a-quarter-inch side wall dimension is the smallest practical size for this arrangement of blind holes The arrangement of the blind holes in the present invention increases the options for the connection pattern of the drivers in it, so that it is only necessary to manufacture a box to provide options for the pattern of the drivers, which would otherwise require 6 different boxes from the standard industrial boxes of the prior art. These and other features and advantages of the present invention will become apparent to those skilled in the art after reading the following detailed description of how it will be performed -in n t t r r-ry-n "lnc ri i ii -incco mp oc- tay? rio cr > ri an illustrative modality of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS In the following detailed description, reference will be made to the accompanying drawings in which: The figure is a front elevation view of an electrical connection box with an array of blind holes of the present invention incorporated in FIG. this.

Figure 2 is a side view, in elevation, of the electrical connection box taken along the line 2-2 of Figure 1. Figure 3 is a side view, in elevation, of the electrical connection box taken along line 3-3 of Figure 1. Figure 4 is a front elevation view of a first blind hole structure of the blind hole arrangement of the present invention. Figure 5 is a cross-sectional view of the first structure of blind holes taken along line 5-5 of Figure 4; Figure 6 is a front perspective view of a protective cover for joining through the open front side of the electrical connection box of the present invention and for installing an electrical device, such as a ceiling fan on a front side of the protective cover. The fissure is a side view, in elevation, of the electrical connection box showing first and second blind holes of the first and second blind hole structure of the die-cut blind hole arrangement. Figure 6 is a side elevational view of the electrical connection box showing two first and second blind holes in the first and second structure of blind holes in the arrangement of blanked holes.

Detailed Description of the Invention Now, in connection with the drawings, particularly with Figures 1 to 3, there is illustrated an arrangement of blind holes for an electrical connection box, generally designated with the number i, of the present invention. Basically, the box 10 includes a blind-like arrangement 12 on top of a side wall 14, and preferably on a back wall 16 and a plurality of side walls 14 thereof. The arrangement of blind holes 12 includes first and second blind hole structures 18, 20 with the blind hole structures 18 and preferably with the structure of the blind hole 20 separated on the "rick". "io > c r- i O? C 'I H The electrical connection box 10 includes a housing 22 formed by a plurality of side walls i4, each substantially flat and with internal and external surfaces OD A 14A v 14B. The ib lateral skin is also substantially flat and has opposite inner and outer surfaces, ibA and ioi. The plurality of side walls 14 each is connected to the other at their opposite ends and connected to each other.

? Z the rear wall ib at a periphery 16c thereof, each of the side walls 14 extending outwards in substantially perpendicular relation from the rear wall 16 a front edge 14c defining a flat front opening of the housing 24. Preferably, the rear wall 16 of the housing 22 is substantially square in shape and each side wall 14 has a length of approximately four and a quarter inches. The advantage that is created by the side walls 14 of this particular length will be discussed in greater detail below, but it is sufficient to note at this point that the length of four inches and one quarter of each side wall 14 combined with the arrangement of holes blind 12 allows a box 10 to have the same number of blind hole pattern options as six of the electrical boxes of the prior art, having three with - | r- \ n rt? The operation was carried out by four parties and eleven sixteenths at 10 to 10 per cent. Preferably, a metal metallic material is made, more particularly, in relation to Figures 5, 7 and 8, the blind hole arrangement 12 includes a pair of separate blind hole structures 16 and a second separate blind hole structure. of and placed between the pair of first structures of holes ? blind id The first blind hole structure 18 defines a first circular removable disk 26 having opposed internal and external surfaces 26A, 26B and a second annular removibile disk 28 surrounding the first circular removable disk 26 and having opposite internal and external surfaces 28A, and 28B . The opposite inner and outer surfaces 26A, 26B and 28A, 28B of the first and second removable discs 26, 28 may be, but need not be, displaced from the pianos that contain the one or the other surface and may be, but not be- it is necessary that they be displaced from the planes containing the opposite internal and external surfaces 14A, 14f and 16A, 16B of each of the walls 14, 16 of the housing 22. As shown in Figure 4, the first and second discs removable 26, 28 have respective centers Cl and C2 spaced apart so that the second removable disk 28 is defined in relation to or * on f r- t_ r- or j_ r ° r ri t_ cr »r-! **. ^ 1 /! ^! 0 2 b L3 c orninri a blind hole structure 20 contains only the first removibie disc 26. Adicionaimente, as seen in figure i, the rear wall 16 can also have a pair of second structures of additional blind holes 20 (removable discs 26) placed on opposite sides of the second blind hole structure 20 which is disposed between the first blind hole structures id. In addition, the first and second stirring discs 26, 26 of each blind hole structure 16, 20 can be selectively removed to create a hole 30, as particularly shown in claims 7 and 6, to receive a conductor (not shown). ) of either of the two sizes that is properly connected to either the side wall i4 or the rear wall 16 to pass the electric wires (not shown) through them. The first and second removable discs 26, 28 of the first and second blind hole structures io, 20 are respectively defined - by areas of weakness along the first and second punched and substantially circular lines 32, 34. The first punched line 32 is completely contained within and separated from the second die cut line 34. The first die cut line 32 of the first removable disk 26 of the blind hole structures 18, 20, preferably has A nr i! Rr. pnn rii trf? ro c ri o r am a nn commercial half inch. The second troqueiaaa line 34 of the second removable disk 26 of each of the first blind hole structures has preferably a second diameter for accepting conductors of commercial size of three quarters of an inch, the holes 30 that are created to remove the first and The second one, or blind holes 26, 26 along the first and second troqueiaa lines 32, 34 are for the conauctores with ? t? commercial size diameters of about half an inch and three quarters of an inch, respectively. The second removable disk 28 of each of the first blind hole structures 18 further has zones of maximum amplitude 36 and zones of minimum amplitude 38 arranged angularly to each other on opposite sides of the first removable disk 26 and along a diameter of the first. second removable disk 28. The zone of maximum amplitude 36 preferably has an amplitude of at least twice the area of minimum amplitude -M- of the second removable disk 2ó. Furthermore, the first removable disk 26 has a first bridge member 40 which interrupts the first die cut line sz and constitutes the only junction between the first removibile disk 26 and the second removibile disk 28 in each of the first blind hole structures 16 and constitutes The only union between the first removable disk 26 and each one of l ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 20. The second removable disk 26 has a second bridge member 42 that interrupts the second die cut line 34 and constitutes the only junction between the second removibile disk 26 and each of the walls i4, ib of the housing 22 in each of the first structures of blind holes ló. The first bridge member 40 is disposed towards the outside either within the maximum amplitude zone 36 of the second disk. b removibie 26 or aentro of the lower area of the rear wall 16 in those first removable disks 26 located in the back wall 16 and is arranged ñacia the interior along the diameter of the first die cut line 32 in those first removable disks 26 located in the side walls 14. The second bridge member 42 is disposed inwardly within the zone of maximum amplitude 36 of the second removable disk 26 in those second blind holes 20 located in the rear wall 16 and is placed outwardly in the area interior of each side wall 14 on those second removable disks 28 located on the side walls 14. The second removable disk 20 further has a pair of second bridge members 44 disposed adjacent to the minimum amplitude zone 36 of the second removable disk 26 and ios which do not interrupt the second line troqueiaaa 34.

I n c in i omh r? Secondly, removibies 26, 28 in pareaes 14, 16 to prevent premature removal of these, the seu-member 44 members and the second bridge members 42 combine to provide the second disc 26 with greater holding force than the only first bridge member 4U provides for the first removable disk 26 and thereby provides support for the second removable disk 26 when an average commercial size orifice is created / inch 30 when removing the removable disk from the first blind hole 26. Now in relation to figures 1 and 6. The housing 22 also has a plurality of separate and coplanar mounting ears 46 attached to the edges 14c of a pair of walls opposing sides 14 of the plurality of these. The mounting lugs 46 are positioned adjacent the opposite ends of the opposite side walls 14 so as not to form bridges at the corners 48 formed in the iO box with ears adjoining the side walls 14. The mounting lugs 46 are also they extend from the respective side walls 14 in substantially perpendicular relation to the respective front edges 14c thereof and are directed towards one another substantially in the same plane. Although the mounting ears 46 are shown to be placed on the same plane as the first one, the first one is located on the same plane as the second one. 46 can be placed in different elevation, such as in a lowered area. Each mounting ear 46 preferably has a hole threaded therein 50 to receive a screw (not shown) through it, or a hole with the size to receive a screw for which it is not necessary to open a hole , to hold a variety of different protective covers 52, as can be shown as an example in FIG. 6, in FIG.

The housing 22. The mounting lugs 46 are preferably 4, with two mounting lugs 46 arranged separately closer to the ends of each leading edge 14c of each pair of side walls 14 opposite each other. In addition, the holes 50 of the mounting ears 46 are symmetrical about two intersecting axes. More specifically, as seen in Figure 1, the mounting ears 46 are arranged in the side walls 14 to place their respective holes 50 so that a pair diagonally opposite (such as the hole in the mounting ear on the corner). upper right and the mounting ear hole in the lower left corner) are symmetrical around a first imaginary axis that passes through the other diagonally opposite pair (such as the mounting ear hole in the upper left corner) and the hole in the ear on the lower corner erech while another pair is diagonally opposite (such as the mounting hole in the upper left corner and the mounting ear hole in the left corner). the lower right corner) are sim- ilar around a second imaginary axis that passes through the diagonally opposed pair (such as the mounting ear hole in the upper right corner and the outer edge). of the mounting ear in the lower left corner). This arrangement 1 symmetric of the respective mounting holes 50 of the 4 mounting ears 46 around an imaginary first and second axes provide suitable alignment for the four corresponding mounting slots 54 of the protective cover 52, regardless of the specific orientation of the protective cover 52. In this manner, all four holes of the mounting ears 50 of the housing 52 can be used in any orientation of the protective cover 52 to attach the protective cover to the housing, by means of the 1-Assembly of the dynamic loads is provided, as can the ceiling fans, to the protective cover 52. The union of the protective cover 5z to the zz housing in four positions provides the necessary balance to avoid a degree of rotation eccentric that fiexionaria and break the mounting ears 46 of housing 22 of ia Now, in relation to figures 8, in conclusion, the four-inch and one-fourth dimension by side wall i4 of housing 22 of the electrical connection box 10 allows the space and clearance necessary for two second removable disks 28 with a size commercial three quarters of an inch and a first disc removibie 26 with a commercial size of half an inch. This dimension of four inches and a quarter per side wall i4 is ei z? Smaller practical size for this arrangement of blind holes, THE two industrial standard sizes for electrical box 10 are four inches, and four inches and eleven sixteen (side). The four inch dimension per side wall does not provide sufficient space and clearance for the blind hole arrangement 12 of the present invention. The four-inch and eleven-sixteenth dimension per side wall provides ample space and clearance for the blind hole arrangement 12 of the present invention, but an electrical box 10 with smaller dimensions is often desired and therefore the present invention provides an arrangement Efficient between the two standard industrial sizes of electrical boxes 10 and maximizes the pattern options for the conductors in it, so that it is only necessary to manufacture a box 10 to provide pattern options n ^ "a_r ^ ar" - .. r-iii -m _ ^ ro _ ^ c, r itnwo r ^ io f ^ ~ ^ -. m .. ^ an..o ^ ~ r ^ a. There are three different boxes made for these, three of the smallest boxes and three boxes 10. plus orandes, each with a combination of (i) three half-inch commercial size blind holes (2) two three-quarter-inch commercial size blind holes, (3) one three-quart commercial-size blind hole inch and two blind holes of commercial size of half an inch.

In addition, electrical connection boxes 10 are generally installed completely behind a dry wall. The elevated part of the protective cover 52 usually projects through the dry wall. The raised portion of the protective cover 52 projecting through the dry wall is exactly the same for all the boxes 10, regardless of the dimension of the side walls 14 thereof. The size of the hole required in the plasterboard is therefore identical for each type of protective cover 52, regardless of the size of the box 10. D é-st-a way, the new dimension of four inches and a quarter by side walls 14 of the present invention does not modify the installation process of the electrical connection box 10. Furthermore, with the present invention it is not necessary to manufacture new protective covers 52 because the holes of the mounting ears 50 are two or four inches above the 22 housing and the existing four-inch and eleven sixteenth-by-four inch and 52-foot-tall protective housings can be modified by adding the four-inch mounting hole holes. four inches. Electrical connection boxes can also be made one and a half to two and a half inches deep, or otherwise, as desired in the industry.

It is believed that the present invention and its advantages will be understood from the aforementioned description and it will be evident that various changes can be made to it without departing from its spirit and scope of the invention or sacrificing all the advantages of its material, the form which is described so far is simply a preferred or exemplary embodiment thereof.

Z

Claims

CLAIMS. an arrangement of blind holes for a box of electrical connections, the arrangement comprising: (a) a housing having at least one side wall that is substantially planar; (b) a pair of first blind hole structures spaced apart on the side wall, each first blind hole structure defining a first circular removable disk and a second ring removibie disk surrounding the first circular disk removibie, the first and second removable discs have separate centers so that the second removable disk is defined eccentrically with the first removable disk, whereby the first and second removable cysts of each first blind hole structure can be removed selectively to create a hole to receive a pr > The second structure of blind holes arranged in the side and separated from the first structures of blind holes and containing only the first removibi disk The arrangement, as mentioned in Claim I, wherein the first and second removibie disks of the first and second blind hole structures are respectively defined by areas of weakness to io.
Along the first and second lines stamped substantially circular, being this first line stamped completely contained within and separated from the second line die cut.
3. The arrangement, as recited in claim 1, wherein the first removable disk of the first and second blind hole structures has a commercially sized first diameter to accept a commercial size conductor a half inch.
4. The arrangement, as mentioned in claim 1, wherein the second removable disk of each of the first blind hole structures has a second commercial size diameter to accept a commercial size conauctor of three quarters of puigaaa.
5. The arrangement, as mentioned in the reimagination, where one aria ia ~ ~ p al ^ i alo-1 m e to a length of about four inches and a quarter.
6. He drove it, as mentioned in claim 1, wherein the housing includes a pair of opposite side walls spaced apart and one facing the other, each side of which the opposite pair has a pair of ears and a co-cavity assembly with the holes. Mounting on this to join a protective cover to the housing for installation and loads In this case, the pair of mounting holes are in a common plane and arranged so that one pair of diagonally opposed mounting holes are symmetrical with respect to a first imaginary axis passing through the other. another pair of diagonally opposed mounting holes and so that the other pair of diagonally opposed mounting holes are symmetrical about a second imaginary axis passing through a pair of diagonally opposed mounting holes, thereby, a cover The protective cover with the four corresponding mounting holes will align with the mounting holes regardless of the specific orientation of the protective cover.
7. An arrangement of blind holes for a box of electrical connections, the arrangement comprises: a rat having a wall or a plurality of side walls, each side wall being connected to the rear wall. at a periphery thereof and extending towards the exterior from and in substantial relation perpendicular to the rear wall, with each side wall being suostanciai flat and with opposite internal and external surfaces, with a front borae defining a flat front opening of the housing, being the wall Z b posterior similarly substantially flat and with opposite internal and external surfaces; (b) a pair of first structures of blind holes placed separately on each of the side wallsEach first blind hole structure defines areas of weakness along the first and second substantially circular stamped lines, the circles of the first and second stamped lines have centers spaced apart from each other, the first stamped line being completely contained within and separated from each other. the second die-cut line, these lines punched together define: (i) a first circular removable disk having opposite internal and external surfaces, and (ii) a second annular removable disk surrounding the first circular removable disk having internal sunsríici? s " • 'external opposite' or 'mec' '* of which the first and second removibie disks of the blind actuators of each of the first blind hole structures can be selectively removed to create a hole of either of two sizes for receive a driver of any of two sizes respectively; Y z i (c) a second blind hole structure disposed in the side wall and spaced apart from the first blind hole structures and containing only the first blind hole.
8. The arrangement, as mentioned in claim 7, wherein the rear wall of the housing has a pair of first blind hole structures.
9. The arrangement, as mentioned in claim 7, in donation to the rear wall has a substantially square shape.
10. The arrangement, as set forth in claim 7, wherein the second removable disk of each of the first blind hole structures further includes zones of maximum and minimum amplitude on the opposite sides of the first removable disk together with a diameter of a second removibie disk. I I W '\ a r rorr? nnmn co mon ni nn a "laro ífi n n ia n i n i n n in the area of maximum amplitude is at least twice the zone of minimum amplitude of the second blind hole. mentioned in claim 10. In donae the first blind hole aaemas includes a first bridge member that interrupts the first die cut line and that constitutes the only union between the first blind hole and the second blind hole in each It is one of the structures of first blind holes and constitutes the only connection between the first blind hole and each of the rear and side walls of the housing in each second blind hole structure. The arrangement, as mentioned in claim 10, wherein the second blind hole further includes a second bridge member interrupting the second punched line and constituting a single junction between the second blind hole and each of the rear walls and sides of the housing in each first blind hole structure. 14. The arrangement, as mentioned in claim 7, in which the first blind hole of the first and second blind hole structures has a commercial first diameter to accept a commercial size conductor i ~ \ arr op l nnmn co mon ni The second blind hole in each of the first blind hole structures has a second commercial diameter to accept a commercial-sized conductor of three-quarters of an inch. . The arrangement, as mentioned in claim 7, in which each side wall of the housing has a length of about four inches and one quarter. The arrangement, as mentioned in claim 7, wherein the plurality of side walls of the housing includes a pair of opposite side walls spaced apart and facing each other, each of the opposite side walls having a pair of mounting ears. with holes therein attached to the leading edge thereof, with each of the mounting ears disposed adjacent to one of a pair of opposite ends of each of the opposite side walls, these mounting ears on one of the side walls Opposite is aligned through and extends towards and in a common plane with the mounting ears on the other of the opposite side walls. The arrangement, as mentioned in claim 17, wherein each of the mounting ears extends in substantially perpendicular relation to the opposite respective, each of the mounting ears has a hole defined therein to receive a fastener, to attach a protective cover to the housing. The arrangement, as mentioned in claim 17, in which the mounting ears are arranged in the side walls in such a way that a first pair of holes of the diagonaimental mounting ears The opposing jaws are symmetrical in relation to a first imaginary axis passing through the other pair of diagonally opposed mounting ear holes and so that the other pair of diagonally opposed mounting holes are symmetrical about a second axis. imaginary that passes through the first pair of diagonally opposite mounting ears holes, whereby a protective cover having four corresponding mounting holes will be aligned with the holes of the mounting ears regardless of the specific orientation of the protective cover. 0. an electrical connection box having a plurality of side walls with an array of blind holes for accepting two conductors of different diameter size at a length of at least one of "| acnar ori oclaorloc * ^ -nunarropln rio n na na no assembly for the union of a protective cover through a face of the box, to install dynamic loads in this, the box includes: (a) a pair of first blind hole structures placed separately in a side wall, each of the first blind hole structures defines a first circular removibie disk and a second annular removibie disk surrounding the first disk J circular removibie, the first and second removibie discs have separate centers, so that the second removibie disc defines in an eccentric relation to the first removibie disc; (b) a second structure of blind holes on a side wall separated from the first blind hole structures and containing only a first removable disk, the first and second detachable discs separated to be selectively removed to create a hole in a wall lateral of any of two diameter sizes to accept through it a conductor of any of two diameter sizes; (c) a pair of separate mounting ears attached to each of the side walls of a pair of side walls which are spaced apart and facing each other, each of the mounting ears is located at a non-roai ^ ri Tl na ri oo t- omn c nnp oc - nc ri od A C ° the opposite side walls and are arranged in a common piano; (d) each of the mounting ears has a hole, with the holes thus arranged to align with a corresponding mounting hole provided in a protective cover to accept a fastener therethrough for the union of the protective cover aya. through the open face of the box, regardless of the specific orientation of the protective cover, in order to provide the necessary balance to avoid an eccentric degree of rotation that would tend to flex and break the mounting ears of the side walls of the box when a dynamic load is installed on the protective cover. The junction box, as mentioned in claim 20, wherein the open face of the box has a substantially square shape and a side wall has a length of about four inches and a quarter. The junction box, as mentioned in claim 21, wherein the first removable disk of the first and second blind hole structures has a commercially sized first diameter to accept commercial size conactors of half a million liters. of connections, as mentioned in Claim 22, in which the second removable disk is inserted into the first blind hole structures has a second commercial size diameter to accept commercial size conductors of three-quarters of an inch. The junction box, as mentioned in claim 23, wherein the second blind hole structure is placed between the pair of blind hole structures. The junction box, as mentioned in claim 20, wherein the arrangement of the mounting ears is such that the holes in a first pair of diagonally opposed mounting ears are symmetrical about a first imaginary axis that passes through the holes in the other pair of diagonally opposed mounting ears, and so that the orifices of the other pair of diagonally opposed mounting ears are symmetrical about a second imaginary axis passing through the holes of the first pair of diagonally opposite mounting lugs, "whereby a protective cover having four corresponding mounting holes will align with the orifices rio" l ac nro-iac rio mnn t- a "io without imnnr" the nriont -an-inn specifies the protective cover. J4 SUMMARY OF THE INVENTION The present invention relates to an arrangement of blind holes for an electrical connection box including a housing having at least one substantially flat side wall, a pair of first structures of blind holes placed in separate spaces in the side wall, with the first structures of blind holes defining a first circular removibie disk and a second annular removibie disk that surrounds and contains the first circular disc, the first and second removable disks have separate centers, so that the second removable disk is defined in eccentric relation to the first removibie disk and the first and second removable disks of each blind hole structure are adapted to be removed selectively to create a nri fi not n ramann nniriomi to "nara nacar n nnnnii nr r- not any of two sizes through the side wall, and a second structure of blind holes disposed in the side wall between and separate from the first structures blind holes and which contains only the first disk removed.The housing also has a plurality of side walls with a pair of walls later opposed faces having a plurality of coplanar and separate mounting ears, respectively arranged at opposite, adjacent ends of the opposite side walls for attachment of a protective cover having mounting holes or slots corresponding to the housing, to install a dynamic load to the protective cover. B