I have also had problems where two sockets one blue and on 13A where placed next to each other on different phases. I pointed out it required notice or being 2.5m apart (see 417.3.1) and also the sockets were next to a door with no RCD.
It was pointed out to me to disconnect them would mean greater use of extension leads and this had been been designed by NG Bailey's engineer and any changes would need to be done by them.
This was on a site boasting "One in a Million" on safety campaign.
No one was injured as a result and I think there are times when we do take it two far. After all as already stated red plugs have all three phases and I had a red 5 pin plug with three 13A sockets connected so I could easy test the outputs and I never had a problem with it. I considered it safer than trying to stick probes up the holes.
It was pointed out to me to disconnect them would mean greater use of extension leads and this had been been designed by NG Bailey's engineer and any changes would need to be done by them.
Agreed, while 415V is more likely to kill you if touched than 240V the fact remains you shouldn't be touching live contacts even at 240V
.
As for the RCD issue that is all a matter of risk assesment IMO. If all the extention leads used for powering tools have RCDs then having them on the sockets as well isn't exactly an urgent requirement.
417.3.1 Simultaneously accessible parts at different potentials shall not be within arm's reach.
A bare live part other than an overhead line shall not be within arm's reach or within 2.5m of the following:
(i) An exposed-conductive-part.
(ii) An extraneous-conductive-part.
(iii) A bare live part of any other circuit.
NOTE:Two parts are deemed to be simultaneously accessible if they are not more than 2.5m apart (see Figure 417).
First, eric, I think that reg. relates to bare live parts, despite its first line:
"Simultaneously accessible parts at different potentials shall not be within arm's reach."
I mean, out of context, that could apply to accessories on different phases, like we were discussing earlier, or even, I suppose, a single pole switch box and its switch: one is at 0V, one at 230V.
So that first line must be with reference to placing bare live parts out of arm's reach.
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