JPH05233742A - Method for selecting wiring material - Google Patents

Abstract

PURPOSE:To provide the method capable of appropriately selecting an electric wire used for a multipoint circuit. CONSTITUTION:In the selection of the electric wire for the multipoint circuit by using a magnetic disk 1 in which a datalized electrical wiring diagram for load is recorded, a processor 2 holds the data of the kind of the electric wire, and the thickness of the electric wire as a database, calculates the voltage decrease of the electric wire arrayed at the multipoint circuit from the data including load currents and a wiring length taken out from an equipment block plan decides the thickness of the electric wire from the calculated voltage drop, and selects the kind of the electric wire corresponding to the decided thickness from the database. Thus, the processor 2 decides the kind of the electric wire used for the multipoint circuit with which an electrical load is connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring material selection method for selecting a wiring material used for electric work.

[0002]

2. Description of the Related Art Electrical work is carried out at the time of building or remodeling a building. By this electrical work, electric wires, which are wiring materials, are wired, and various outlets and branch breakers are attached. The mounting positions of these outlets and branch breakers are CAD (Computer Aided Des).
In some cases, it is shown in the drawing in advance by using "ign." Such a technique is disclosed in Japanese Patent Application Laid-Open No. 2-238571.

Based on such a drawing, an electrician or the like carries out wiring of a branch circuit according to the capacity of an electric appliance connected to the branch circuit branched from the main line.

[0004]

By the way, the determination of the type of the electric wire used in the branch circuit often depends on the past experience of an electrician or the like. Therefore, if the electric current capacity of the electric wire is made too large with respect to the electric current flowing through the electric wire and the thickness of the electric wire to be used is increased, the construction cost will increase.

Further, if the thickness of the electric wire is reduced, the resistance of the electric wire increases, which may cause an accident such as heat generation and ignition.

An object of the present invention is to eliminate the above drawbacks and to provide a method of selecting a wiring material which enables an appropriate selection of an electric wire used in a branch circuit.

[0007]

In order to achieve the object of the present invention, the data of the types of wiring materials and the thicknesses of these wiring materials are held as a database and extracted from the load current and equipment layout diagram. Calculate the voltage drop of the wiring material wired in the branch circuit from the data including the wiring length,
The thickness of the wiring material is determined from the calculated voltage drop, and the type of wiring material corresponding to the determined thickness is selected from the database.

[0008]

According to the present invention, data on the types of wiring materials and the thicknesses of these wiring materials are held in advance as a database. In addition, the present invention uses a facility data layout plan for loads.

Then, according to the present invention, the voltage drop of the wiring material wired in the branch circuit is calculated from the data including the current of the load and the wiring length extracted from the equipment layout. Next, the thickness of the wiring material is determined from the calculated voltage drop, and the type of wiring material corresponding to the determined thickness is selected from the database.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a schematic view showing an example of a processing apparatus and the like for carrying out the present invention.

A drawing prepared by CAD is used for this processing apparatus and the like. CAD creates a drawing of a building, a room, or the like, and an equipment layout drawing (hereinafter, referred to as an electric drawing) in which an outlet for an electric appliance, a branch breaker of a branch circuit, and the like are added to the drawing. The branch circuit branches the electricity from the main line and supplies the branched electricity to the electric appliance.

An example of this electrical diagram is shown in FIG. In FIG. 3, an outlet 4 for an air conditioner 41 as an electric appliance
1A is installed on the window 31 side of the room, and the branch breaker 42 of the branch circuit is installed on the door 32 side.

Then, the CAD records the created electrogram data on the magnetic disk 1 or the like.

The electric diagram data recorded on the magnetic disk 1 includes the room diagram shown in FIG.
There is also dimensional shape data.

On the other hand, the processing device 2 holds electric wire data in advance as a database. That is, the type of electric wire as a wiring material and the data of the thickness of each type of electric wire are stored as a database. Then, the processing device 2 processes the read data of the electrogram according to the processing procedure shown in FIG.

First, the processing device 2 reads the data of the electrogram recorded on the magnetic disk 1 (step S1).
1). Next, the electric wire coupling position is input to the processing device 2 from the keyboard 3. That is, in the case of FIG. 3, the attachment positions of the outlet 41A and the branch breaker 42 are input as the wire coupling positions (step S12).

When the electric wire coupling position is determined, the electric wire wiring route is designed as shown by the chain line 43 in FIG. 4 according to a predetermined wiring rule (step S13). In this wiring route design, 3 of the room read from the magnetic disk 1
With reference to the data of the three-dimensional shape, the wiring route design of the three-dimensional electric wire is performed. Further, the length of the electric wire routed along this route is calculated (step S14).

Next, the voltage drop of the route shown by the chain line 43 in FIG. 4 is calculated from the length of the electric wire calculated in step S14, the current consumed by the cooling and heating device 41, etc. (step S
15) Then, the thickness of the wire is determined using this voltage drop (step S16).

After the step S16, the processing device 2 operates as shown in FIG.
A wiring diagram as shown in (1) is created (step S1
7) From the electric wire data stored in the database of the processing device 2, the type of electric wire having the thickness determined in step S16 is picked up (step S18). Then, the type of wire selected in step S18 is added to the wiring diagram created in step S17, and the wiring diagram shown in FIG. 6 is output to the display screen 4 or the printer 5 (step S19). In FIG. 6, “2C × 1.6” represents the type of the selected electric wire.

As described above, in this embodiment, the wiring diagram of the electric wire is three-dimensionally designed by using the electric diagram created by the CAD to obtain the wiring length of the electric wire. Since the voltage drop is calculated based on this wiring length and the thickness of the electric wire is determined, it is possible to select the optimum electric wire type for wiring.

Although the embodiment has been described above with reference to the drawings, the specific structure is not limited to this embodiment, and the present invention can be applied even if there is a design change or the like within the scope not departing from the gist of the invention. Of course, it is included in.

For example, in the embodiment of the present invention, as shown in FIG. 2, the wires are picked up after the wiring diagram is created, but conversely, the wiring diagram can be created after the wires are picked up. Is.

In this embodiment, the electrogram data is transferred to the processing device 2 by using the magnetic disk 1. However, the data transfer is not limited to this, and for example, C
If the AD and the processing device 2 are separated, it is possible to move the data using a telephone line.

Further, although the wiring of the room of the building has been described in this embodiment, the present invention can be applied to places where electric wires are used outdoors or in vehicles.

[0026]

As described above, according to the present invention, the thickness of the wiring material used for the branch circuit is determined from the voltage drop of the wiring material, and the wiring material corresponding to this thickness is determined from the database. Since the selection is made, it is possible to select a wiring material suitable for the load current and the wiring length extracted from the equipment layout diagram.

As a result, it is possible to prevent heat generation due to a wiring material selection error and fire due to this heat generation.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an example of a processing apparatus and the like for carrying out the present invention.

2 is a flowchart showing an example of a processing procedure of the processing apparatus of FIG.

FIG. 3 is a diagram showing an example of an electrical diagram created by CAD.

FIG. 4 is a diagram for explaining calculation of an electric wire length.

5 is a wiring diagram created from the electrical diagram of FIG. 3. FIG.

FIG. 6 is a wiring diagram created by the processing procedure of FIG.

[Explanation of symbols]

 1 magnetic disk 2 processor

Claims (1)

[Claims] 1. A method of selecting a wiring material, which determines the type of wiring material used for a branch circuit to which an electrical load is connected, by using a facility-based equipment layout diagram for this load, the wiring material comprising: The data of the type and the thickness of these wiring materials is held as a database, and the voltage drop of the wiring material wired in the branch circuit is calculated from the data including the load current and the wiring length extracted from the equipment layout diagram. A method for selecting a wiring material, which comprises: calculating, determining a thickness of a wiring material from the calculated voltage drop, and selecting a type of wiring material corresponding to the determined thickness from the database.