Let's understand in the beginning what is the electric meter? It is the device considering the consumed electric power. Counters happen: one-rate, two-tariff, three-tariff; single-phase, three-phase. The three-phase electric counter is device for electricity metering in 3 and 4 wire networks where alternating three-phase current with frequency of 50 Hz. Such three-phase counters establish in order that consumers could connect more electric devices, which power not only 220 volts, but also 380.
Instruction
1. To establish three-phase counter it is necessary to write the application in the organization delivering you the electric power. The professional electrician has to connect the counter surely. It not only the requirement of the organizations which deliver the electric power, it and standard of safety. Nonprofessional connection of the counter can cost much owners of housing and to the unfortunate master.
2. Install the electric meter where there passes the electrical wiring. Attach all electrical wires which approach the apartment to input terminals of the electric meter, and output terminals are already divider of electric stream, electric wiring of the subscriber.
3. Install the counter only in readily available service spaces, on panels, boards, in special cabinets, that is on rigid basis. By the established rules the panel with the counter is installed at the height not less than 130 cm and not higher than 170 cm.
4. Seal the device. The employee of the organization delivering you the electric power does this procedure. As soon as you seal the counter, it is possible to do electrical wiring in the apartment.
5. If you had to install the counter where there is danger of pollution or the place is available to strangers, then it is better to install the counter in special cabinet. Such cabinet has window at the level of the dial and is locked.
6. Availability of twists and ration in electrical wiring is not allowed to the counter. The most smaller section of wires to counters of 2.5 mm2 of aluminum wires of 4 mm2. About counters when mounting wiring it is necessary to leave the ends of wires not less than 120 mm. In front of the counter the isolation on length of zero conductor of 100 mm has to differ in coloring. In rooms with tension in networks up to 380 volts, it is necessary to provide shutdown of the counter the special switching device at distance of 10 meters from the counter.
7. When you install the counter, provide reliable, strong contact of the attached wires. Tighten terminal screws in 2 receptions. If at connection you use copper flexible wire, then in advance make tinning solder. Use tin lead solder, it will provide more reliable connection. It is recommended to call the representative of the organization delivering the electric power in half a year of operation of the counter and to check contacts in terminal row.