Observe the surface of the electric energy meter. From the left: 1 hole is connected with public fire in, the second hole is connected with private fire out, the third hole is connected with public zero in, and the fourth hole is connected with private zero out. When wiring, it is necessary to ensure the depth of the bare wire head into the hole and the tightness of the pressure screw, so that there is no loss in the bare wire head hole and no exposure outside the hole. After connecting the wires, check that they are correct and in good condition.
Specific connection mode: the single-phase meter faces itself and has four interfaces, 1 and 3 are fire-fighting zero incoming lines, 2 and 4 are fire-fighting zero outgoing lines, and the outgoing lines are connected to electrical appliances after leakage protection and air opening. Generally, there are two kinds of wiring: 1 and 3 incoming wires, and 2 and 4 outgoing wires; The other is to press 1 and 2 to connect, and press 3 and 4 to connect.
No matter which connection mode is adopted, the phase wire (live wire) must be connected to the terminal of the current coil of the electric meter. Some instruments have special wiring, and the specific wiring method can refer to the wiring diagram on the terminal cover plate.
Frequently asked questions about household electricity consumption.
1, when replacing light bulbs or overhauling electrical appliances, be sure to disconnect the main switch power supply at home to avoid electric shock accidents. When using the patch panel, if the insulation of the wire bursts, try to remove the new wire immediately, or use it after winding it with black insulating tape to avoid touching the exposed wire and avoiding electric shock accidents.
2. When using the power socket in daily life, both hands must be wiped clean before touching the power plug to avoid electric shock. Never touch the internal structure with your hands or nails before unplugging the power socket. Considering that your body and nails are electrical conductors, you will get an electric shock when you touch metal materials with current.
When using electrical appliances, if the current is too large, the fuse will be blown. When replacing fuses, fuses with appropriate current loads must be used. If the fuse is too thick or too thin, the curative effect cannot be reasonably guaranteed.