1. Location selection of explosion-proof lamp circuit:

Electrical wiring should be laid in locations where the risk of explosion is low or at a distance from the source of the release.

2. Selection of laying method of explosion-proof lamp circuit:

The electrical lines in explosion-hazardous environments mainly include explosion-proof steel pipe wiring and cable wiring.

3. Isolation and sealing of explosion-proof lamp circuit:

The trenches for laying electrical lines and protection pipes, cables or steel pipes should be tightly blocked with non-combustible materials when they pass through the partition walls or floors between areas with different levels of explosive hazardous environments.

4. Selection of wire material for explosion-proof lamp circuit:

Within the scope of Zone 1 of the explosion hazard environment, the distribution line should use copper core wires or cables. Where there is severe vibration, multi-strand copper-core flexible wires or multi-strand copper-core cables should be used. Aluminum core power cables shall not be used underground in coal mines. Within the scope of Zone 2 of the explosion hazard environment, the power lines should use aluminum conductors or cables with a cross-sectional area of 4mm2 and above, and the lighting lines can use a cross-sectional area of 2.5mm2. and above aluminum conductors or cables.

5. Allowable current carrying capacity of explosion-proof lamp circuit:

The selection of the section of the insulated wire and the section of the cable in Zone 1 and Zone 2, the allowable current carrying capacity of the conductor should not be less than 1.25 times the rated current of the fuse melt and the set current of the long-time overcurrent release of the circuit breaker. The allowable current carrying capacity of the branch line leading to the low-voltage cage induction motor should not be less than 1.25 times the rated current of the motor.

6. Connection of electrical circuit of explosion-proof lamp:

The intermediate connections of electrical circuits in Zones 1 and 2 must be inside the vicinity of explosion-proof junction boxes or splice boxes suitable for the hazardous environment. Zone 1 should use a flameproof junction box, and Zone 2 can use an increased safety junction box.