Wire THHN is a type of building wire in the United States, commonly used for cable specifications such as THHN 16, 6, 12, 10, and 14, commonly used in specifications such as cable THHN 16, 6 THHN wire, 12 THHN wire, 10 THN wire, and 14 gauge THHN wire
Wire THHN is a building wire in the United States, commonly used in specifications such as cable THHN 16, 6 THHN wire, 12 THHN wire, 10 THHN wire, and 14 gauge THHN wire
1. THHN wire can be divided into three types
The red one is the live line, the blue one is the zero continuation, and the yellow one is the ground line. During decoration, the power conduit should be pre positioned in the trench to ensure that the surface of the conduit is recessed into the wall for a certain distance. After the THHN wire or THWN 2 wire connection is qualified, the wall should be wetted and sealed with a 1:5 alkali solution to prevent alkali accumulation. The sealing should be smooth and the wall should be low dry. The installation of the power supply bottom box should be stable, and the bottom surface of the panel should be flat and match the wall. The direction of the power cord should be horizontal and vertical, and should not be slanted.
2. Installation of power supply circuit
The power supply circuits of the kitchen, bathroom, and toilet should use leakage protectors independently and must be connected to other power supply circuits. It is not allowed to overlap the neutral wire of the soldier on the circuit. For high-power electrical appliances such as air conditioners, a dedicated power supply circuit must be installed and connected.
3. Switch installation
Installation method of seesaw switch: Press in at the lower end to turn on, and press in at the upper end to turn off. When fastening socket switches and panels, screws should be used instead of buried nails or stone board screws to damage the bottom box. The bedroom should be equipped with dual control switches. Kitchen power sockets should be equipped with switches in parallel. The switch box is generally above the ground, and the switch should be about one meter above the ground.
4. Matters concerning the installation of wires into the wall
All wires entering the wall shall be buried in PVC flame-retardant conduit and connected to elbows, joints, junction boxes, etc. When connecting to the bottom of the junction box, there shall be no joints in the conduit, and the power cord shall not be exposed to ensure the safety of the THHN wire.
5. THHN wire conduit installation
When passing through underground areas, it is important to ensure that the female conduit is tightly connected underground. No joints are allowed underground, and bends must be installed at the points where power lines enter or exit the ground. Before the ground is sealed, the PVC sleeve must be protected to prevent any damage or breakage. When laying floor tiles, the PVC sleeve should be completely covered with sand; When nailing wooden flooring, the power cord should be installed along the corner of the wall to prevent damage from the drill.
6. Installation of sockets
All unidirectional sockets should be connected according to the principle of "left neutral wire, right live wire, middle ground wire" or "upper fire wire, lower neutral wire". The air conditioning power supply generally uses a triangular plug. A socket with a protective valve should be used at a height that children can touch. Waterproof sockets should be used in bathrooms, washing rooms, and bathhouses, with an installation height of not less than 1m and kept away from water sources.
Do you understand what to pay attention to when decorating your home?
