Low-voltage distribution cabinet busbar connection
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We are now installing a power distribution system; when connecting the busbars, we insert the screws in one direction, but the client requires them to be inserted in a direction that is aligned with the cabinet wall for one of the phases. What I don’t understand is that as a result, the distance between the screw and phase B becomes smaller – is this in compliance with the standards?
According to the specifications, it is not necessarily in accordance with the owner’s requirements
I’m the owner, haha. As long as the safety distance is greater than 20 mm, there’s no problem
Yes, an electrical clearance of more than 20 mm is sufficient
Work safely and properly. No one can find any faults, and accidents are not likely to occur
Follow the standard procedures, but communicate with the owner in advance. Let him accept a more reasonable plan.
Many property owners these days work in management roles, and they tend to jump to conclusions based on their experience. Once we had a property owner who insisted that when designing the cable routing, pipes should be used instead of cable trenches when crossing roads (within the factory), on the grounds of aesthetics – I was stunned. So for the property owners, we explain things to them using logic; if there is a logical reason, it needs to be explained, otherwise it will be they who regret it in the end. If it’s right, then stick to it!
If there is sufficient safety distance, it can be done according to the owner’s requirements； Otherwise, it won’t be done. Sometimes, the owners’ requests aren’t all reasonable, and it’s not possible to go against the regulatory requirements.
It should be fine if it’s greater than 20mm. The specifications require that the nuts on the maintenance side face outward