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400v 3P Disboard Distance from Belfast sink

Former Community Member
Former Community Member

Hello all,

Just had a sprinkler valve set incorrectly installed too far to the right on site that prevents a sink being installed to the right of the sprinkler valveset. As such, the solution would be to install the sink to the left of the valveset but this now puts the sink within the proximity of a 400v 3P disboard. Does anyone know the minimum distance that is required to be between the two? We are considering installing a partition to ensure safety however I would like to know what the regulations actually require. Any assistance would be appreciated as i predominantly have a mechanical background. Thanks in advance!

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    That Colin was not what I asked. A metal DB is normally IP44. This is splash and condensation resistant. A 300mm displacement is unlikely to make much difference to exposure in commercial premises. In other words, you are saying this is an “opinion” and not from a particular source. BS7671 fully recognises this situation and uses IP ratings to define problems, defined by 512.2.1, and 522.3.1 is irrelevant in this situation as the external influence is clearly water ingress. You personally may not like this and it is not ideal, but I cannot see that it is contrary to BS7671. If it has large open holes, this is a different problem, but we do not know this. I would expect that the cables into this DB are probably SWA or in containment, and hole sealing is probably satisfactory. Holes in the bottom surface may be a good thing to allow condensation to escape, but do not offer any particular risk.

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  • 0

    That Colin was not what I asked. A metal DB is normally IP44. This is splash and condensation resistant. A 300mm displacement is unlikely to make much difference to exposure in commercial premises. In other words, you are saying this is an “opinion” and not from a particular source. BS7671 fully recognises this situation and uses IP ratings to define problems, defined by 512.2.1, and 522.3.1 is irrelevant in this situation as the external influence is clearly water ingress. You personally may not like this and it is not ideal, but I cannot see that it is contrary to BS7671. If it has large open holes, this is a different problem, but we do not know this. I would expect that the cables into this DB are probably SWA or in containment, and hole sealing is probably satisfactory. Holes in the bottom surface may be a good thing to allow condensation to escape, but do not offer any particular risk.

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