hi , when fitting a consumer unit and entering through the top with the wires how do you abide by the ip4x rule , even when being as carefull as i can with the knock outs i still end up having to use decorators caulk on it (it makes it look a right mess)
Caulk, mastic and blind grommets can't be used on the top of the board for IP4x. Using box trunking or coming in from behind, as already mentioned, will do the job.
Maybe, but they won't pass an NIC inspection. Probably because caulk and mastic can easily be pushed in or lose its stickiness. As for blind grommets, it probably depends on how well you do it, but I have been advised by NIC not to use them on top of the board.
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