1. Main Material Quality and Specifications

1: Electric wire: Pigeon brand. Living room air conditioner requires 6 mm², other air conditioners 4 mm², kitchen and bathroom 4 mm², socket and lighting power supply 2.5 mm², switch wires 1.5 mm², and grounding wires 1.5 mm² with dual color marking.

2: Wire boxes: Prova brand.

3: Conduit pipes: Deyi General Medium 16mm.

4: Network cables: Akihabara Super Category 5 shielded.

5: Telephone lines: Akihabara 4-core.

6: Closed-circuit cables: Akihabara brand.

2. Basic Circuit Distribution for Indoor Strong Power System

1: One bedroom and one living room: 2 air conditioning circuits, 1 kitchen, 1 bathroom, 1 socket, 1 lighting — total of 6 circuits.

2: Two bedrooms and one living room: 3 air conditioning circuits, 1 kitchen, 1 bathroom, 1 bedroom socket, 1 living room socket, and 1 lighting — total of 8 circuits.

3: Three bedrooms and two living rooms: 4 air conditioning circuits, 1 kitchen, 2 bathrooms, 1 bedroom socket, 1 living room socket, 1 living room light, and 1 bedroom light — total of 11 circuits.

4: Four bedrooms and two living rooms: 5 air conditioning circuits, 1 kitchen, 2 bathrooms, 1 bedroom socket, 1 living room socket, 1 living room light, and 1 bedroom light — total of 12 circuits.

5: Special requirements: Follow the designer’s construction drawings and budget plan.

6: Dual control of lights: Ideally, one per room (living room and dining room count as one).

3. Indoor Weak Current System Branch Distribution

1: One bedroom and one living room: 2 network cables, 2 telephone lines, and 2 closed-circuit cables.

2: Two bedrooms and one living room: 3 network cables, 3 telephone lines, and 3 closed-circuit cables.

3: Three bedrooms and two living rooms: 4 network cables, 4 telephone lines, and 4 closed-circuit cables.

4: Four bedrooms and two living rooms: 5 network cables, 5 telephone lines, and 5 closed-circuit cables.

5: Only two surround sound lines are installed in the living room for each unit.

4. Construction Considerations

1: Based on the design drawings, determine the pipeline direction, elevation, and positions of switches and sockets.

2: Strong power wiring must strictly follow company regulations and design requirements.

3: Concealed wiring must be done through conduits. It is not allowed to replace yellow wax pipes with bottom boxes or distribution boxes, nor use them instead of elbows or threading. This rule applies even to ceiling light cables.

4: Power cables and weak signal cables should never be run together in the same conduit. Strong and weak lines should not pass through the same junction box.

5: Maintain a minimum horizontal distance of 500mm between power cables and sockets and weak signal cables and sockets.

6: Keep a minimum parallel distance of 300mm between power cables and heating, hot water, or gas pipes, and at least 100mm when crossing.

7: No joints are allowed inside the conduit. All connections and splices must be made in junction boxes, and they must be securely connected and properly insulated.

8: The resistance between wires and between wires and ground must be greater than 0.5 MΩ.

9: Ensure that power, TV, and telephone sockets in the same room are level, with a height difference of less than 5mm.

10: Splash-proof sockets must be used in kitchens and bathrooms, and switches should be installed outside the door.

11: The indoor distribution box must be replaced with a 16-amp model. Leakage protection switches are required in the kitchen, bathroom, and socket circuits. Do not install a general leakage protector in front of the main switch.

12: When conduits enter boxes, a lock must be installed. For 16mm PVC pipes, no more than 4 wires can be threaded per pipe.

13: Sockets should be installed from left to right, with the ground wire at the top.

14: Avoid connecting zero and ground lines in parallel across any loop.

15: Light control wiring: Use 3 switches for the living room main light, 2 switches for the dining room light, and dual control switches in the main and secondary bedrooms, as well as the living room and hallway.

16: The electric water heater in the bathroom must have a separate power supply.

17: Ceiling spotlights and downlights must connect via corrugated pipes using a circular tee; bare wires are strictly prohibited.

5. Flexible Line Installation Technology for Deyi PVC General Medium Conduit

(1) Process Flow

Position the spring wire, bury the box firmly, lay the conduit, and thread the pipe.

(2) Construction Method

1: Elastic wire positioning

Based on the design, determine the position of switches, sockets, and distribution boxes on the wall and mark the layout. The wiring should be as minimal as possible, neat, and organized.

2: Stable buried boxes and boxes in the wall

Check the exact location of the wire boxes and distribution boxes upon arrival, then fix them with cement mortar. Once the mortar has set, proceed with wiring.

3: Laying pipelines

When cutting pipes with a pipe wrench or hacksaw, ensure the cut is perpendicular to the centerline. Use straight couplings for connections. Cold bending should be done with a special bender. For vertical or horizontal runs, fix every 1m. At bends, set fixed points 300–500mm from each end of the curve. When entering boxes, each pipe must go into a separate hole, connected with a matching coupling and internal nut. Keep a 10mm gap between pipes.

4: Pipe threading

First check that all pipe locks are intact. Replace any damaged or missing ones. For long or complex routes, apply a small amount of talcum powder to aid threading. Then, two people should pull the wire from both ends, maintaining communication to coordinate the process.

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