A) TN-S three-phase five-wire system must be adopted for cables and wires used in site construction. It is forbidden to use three-phase four-core plus one core instead of five-core cables and wires. All distribution wires on site shall be rubber sheathed flexible wires. It is not allowed to use plastic wires and flower wires, and it is not allowed to use iron wires and copper wires instead of fuses.

B) Before the construction electricity is put into use, it can only be used after it is accepted by the relevant departments, and the management personnel shall make technical disclosure on the site construction electricity.

C) Temporary power lines shall be laid overhead, and temporary lighting in damp and easily-touched places with charged bodies shall be provided with safe voltage of no more than 24V.

D) Installation, maintenance and removal of power supply lines and electrical equipment on the construction site must be carried out by electricians with valid certificates.

E) The indoor safety tools, protective measures and fire-fighting equipment in the transformer room must be complete and effective.

F) Strengthen the monitoring and inspection of equipment in inflammable, explosive and dangerous goods storage places, and immediately rectify any problems found.

G) The use of fixed and mobile machinery and lighting shall be subject to secondary leakage protection. And regular inspection, repair and maintenance.

H) Site electricians must be familiar with and conscientiously implement the Technical Specification for Temporary Electricity Use in Construction Sites of the Ministry of Construction and the relevant provisions of the Safety Technical Regulations of the Power Supply Bureau and the Labor Bureau.

I) Electricians should hold relevant certificates, stick to their posts, abide by professional ethics and operating procedures, and keep construction logs.

Facing the front line of production, on call, serious and responsible for the work, constantly improve the technical level, and serve the construction and production wholeheartedly.

J) On-site electricians should keep abreast of the insulation degree and operation of all power supply lines and electrical equipment on site, the increase and decrease of equipment, the fuse matching of switch box, flow box and electrical equipment, and whether the protective covers of sockets and switches are complete and in good condition. If damaged, they should be replaced in time.

K) Distribution boxes, lines, electrical equipment and spare parts used at the site shall be intact, bare and free from shedding, with neat appearance and orderly arrangement.

L) "Three-level distribution and two-level protection" must be strictly implemented. The construction site must be provided with a total distribution box or a total cabinet, and it is not allowed to directly supply power to each distribution box on the www.fdcew.com of the power supply system provided by the power supply bureau or the construction unit.

M) It is forbidden to use copper wire for protection in RC fuses of various distribution boxes, and special copper fuse pieces that match the actual use must be used.

N) The switch box must meet the requirements of "one machine, one brake, one leakage box", and the leakage switch in the box shall not exceed the rated leakage current of 30ma/0.1s..

O) The switch box must be fixed and suspended, and shall not be placed anywhere. It is forbidden to use boxes whose inclination exceeds 15.

P) For all power supply lines, electrical equipment and various distribution boxes, the electrician on duty at the site shall conduct comprehensive and detailed inspection at least twice a day, and handle the problems in time and make records when found.

Q) The personnel on duty shall regularly check and clean the low-voltage cabinet in the transformer room according to the requirements of the specification, and report the problems in time.

R) All distribution boxes on the construction site must be cleaned once a week. Dust, humidity and other places, according to the situation to increase the number of cleaning, to ensure the cleanliness and integrity of the distribution box.

S) Electrical equipment must be tested for insulation resistance before installation and use, and can only be put into use after passing the test.

T) The site electrician must record the action of the leakage protection switch, such as action time, action reason and action times. , find out the cause of the action and handle it before it can continue to be put into use.

U) All electrical equipment on the site must be connected to a three-level distribution box, otherwise they are not allowed to be used. Switch and leakage protector must be installed in the box. The distance between tertiary box and secondary box should not be greater than 30m, and the distance between tertiary box and electrical equipment should not be greater than 5m.

V) During the rainy season, the terminal test of the leakage switch must be carried out every month. If no action is found, it should be replaced immediately and recorded truthfully.