Smart Meter with Low-Voltage Household Wiring Installation Principles
1. Low-voltage wiring conversion principle：
(1) Household power supply
The transformation of rural low-voltage connecting lines should be extended to households. The installation of the user's metering device is not allowed to adopt the combined installation method, and it should be as close as possible to the user's entrance.
(2) Indoor wiring and home protection installation
Increase publicity, encourage users to install household residual current action protectors, ensure that the installation rate reaches 100%, and cancel unverified installations on this basis.
(3) Process standards
The construction technology strictly implements the technical guidelines and construction technical standards of the provincial and municipal companies.
(4) Project reserve requirements
The low-voltage connecting line reconstruction project provides users with power distribution solutions.
Editing the public number of a transmission and distribution line
2. Household receiving line laying method
(1) Direct home power supply
When the receiving line has only one offline point and only supplies power to one user, the direct power supply of the receiving line and the same wire of the receiving line can be used to directly enter the meter box.
(2) Family power supply in series
When there is only one offline receiving line, but power is supplied to multiple users at the same time, the receiving line can be laid along the wall, and the input line T is connected in series with the meter box.
(3) Household power supply
When there is only one downline of the household power line to supply power to two or more users at the same time, the user power line is T-connected, and the branch line is laid along the wall. The household electric line T is connected to the branch circuit of the meter box to supply electricity to the household. Depending on site conditions, T-contacts should be minimized.
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