Issues with the introduction of explosion-proof motor cables
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This post was last edited by yuebing on 2010-11-12 at 10:46. 1. Is it necessary to use explosion-proof hoses for the connection? Can I skip it? What explosion-proof measures should be taken if it isn’t used? I saw someone on the internet say that explosion-proof gaskets and rubber rings are used? Is this included with the motor? If I’m the one designing it, what explosion-proof accessories should I provide for the owner? 2. When connecting a four-core cable to the motor terminal box, where should the ground wire core be connected? Looking at the previous installation diagrams, there is a grounding terminal on the motor casing away from the wiring terminals – is that what is being referred to? So when making the connections, does the ground wire need to be separated from the other three wires? Does that mean explosion-proof hoses can no longer be used? I’ve never worked on-site, so I lack a lot of common knowledge in this area. . .
Why isn’t anyone answering? Push on your own. . .
This post was last edited by zhaohh3211 on 2010-12-17 at 14:53. It was also last edited by yuebing on 2010-11-12 at 10:46. 1. Regarding the first question, it depends on the specific operating environment and requirements of the explosion-proof motor (flammability, explosiveness, high temperatures). The explosion-proof flanges and rubber seals come standard with the explosion-proof motor; as for whether the cable diameter and the explosion-proof flanges can be symmetrical, that’s hard to say. As long as the cable and the motor are properly selected, there’s no need to worry about symmetry. 2. The terminal or screw on the motor casing, located away from the wiring terminals, is used to connect the ground wire. However, the enclosure of the explosion-proof motor must also be reliably grounded.
Use explosion-proof hoses; the motor has two grounding connections – one is between the motor cable box and the ground terminal, and the other is between the motor housing and the conduit.
The 3+1 are all inside the junction box.
The 3+1 components are all inside the junction box/That’s how we do it too.
Study*study*,. . . . On-the-ground experience in this area is indeed very important.