Home > News

Technical Requirements For Explosion-proof Electrical Equipment Connectors And Junction Boxes

Aug. 31, 2018

Electrical equipment must have connectors for the introduction of Sealing Joint For Armored Cable or wires. When Type I portable electrical equipment and Class II electrical equipment are made into permanent cable type, there may be no connecting parts, but the outer end of the cable must be placed in the Explosion Proof Wiring Box; or it can be connected in a safe place; it can also be connected by explosion-proof pins. The junction box can be made into various explosion-proof types, such as explosion-proof type, increased safety type and the like.

The design of the junction box must be designed to be easy to wire and leave room for the bend radius of the wire. It must also be considered that the electrical clearance and creepage distance must meet the requirements of various explosion-proof requirements after the cable is connected. Where electrical equipment is allowed to use aluminum core cable, copper and aluminum joints shall be used. The structural dimensions of the junction box shall ensure the correct connection of the aluminum core cable, electrical clearance and creepage distance, and shall also comply with the explosion-proof requirements. The structural dimensions of the inlet port and sealing ring should also facilitate the introduction of the aluminum core cable. The inner surface of the junction box and the inner surface of the metal casing where sparks may occur must be evenly coated with arc-resistant paint to prevent accidents. Arc-proof paint can be used with 1320, 1321, 1322, 1323 air-drying or baking epoxy enamel.

Explosion Proof Wiring Box