Does BS7671 in its present incarnation refer to that BS1363 definition of double socket for the purposes of the wiring regs?
I want to remove a 3 pin round lamp socket - how??
- Thread starter Sleebagz
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It refers to accessories to BS 1363 as suitable for use on a ring final circuit.
But does it actually say that "double socket" in the regs. means a double socket as defined in BS1363?
And I just had another thought while pedantry about what may or may not be connected to a ring spur is being debated. Not that I'd ever want to use one of these things myself, but does BS7671 allow you to put one of these on a spur? It's not just a double socket, after all.....
Not just a double socket but only has one set of terminals
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I think what was meant was that it could have a nominal 30A demand plugged in to it.
Oh I see. Well I don't think many of them will actually pull 4.2A across the two USB ports, I think it's limited to 2.1 shared generally. The better quality ones might be a bit meatier.
And wrt that query I'm not too sure. I don't think they're mentioned at all are they? If it confirms to 1363 it must be allowed
And wrt that query I'm not too sure. I don't think they're mentioned at all are they? If it confirms to 1363 it must be allowed
On a ring circuit in general, certainly, but what about a spur? What is the precise wording relating to spurs in the current edition?
Do you have in mind (surely not) that it may be a quadruple socket and therefore not allowed?
There is nothing to describe a double socket outlet in the regulations.
There is nothing to describe a double socket outlet in the regulations.
Not really, unless you think that two 5V 2A USB outlets could draw 4A at 230V
Kind Regards, John
No, but as far as the 240V side is concerned it's a double socket plus a power supply for something else, not just a double socket.
What is the exact wording about what may be connected on an non-fused spur?
That's probably true, but even if they could supply 4.2A at 5V, that would only represent about 91 mA (ignoring inefficiencies/losses) drawn from the 230V supply!
Kind Regards, John
I doubt he means that, but ... if there were a socket (double or single) on an unfused spur of a ring final and someone proposed connecting ('spurring off') a USB charger (or anything else, come to that) to the supply to that socket, would you not tell them that such was 'not allowed'?
Kind Regards, John
BS7671 itself is totally silent on the matter, other than saying that "ring finals, with or without unfused spurs" may supply accessories to BS1363. It is only the guidance of ('informative') Appendix 15 which talks about "only one (single or double) socket" on an unfused spur.
Kind Regards John
I just checked the spec and even MK's only draw 2A shared. I have an MK and it's great, wouldn't use any other brand for fear of burning my house down!
Ah, thanks, I'd forgotten we'd already discussed how that had changed in the current edition. So if that's really only a suggestion, and there's no actual definition of what BS7671 considers to be a double socket anyway, I would have thought that anyone could wire two singles in the same box together and quite definitely claim compliance with BS7671, and possibly even compliance with the "informative" appendix suggestions as well.
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