Don't know what's gone wrong but -
JohnW2 wrote:
You mean by the fuse(s) in the plug(s)? If so, then change the socket (on a 1.5mm² dedicated circuit protected by a B50) to an immersian heater.
I did answer that.
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Is that not because such spurs are specifically 'dispensated'? If one relied on the regs in general, wouldn't the length of an unfused spur be limited to 3m?
Yes to dispensation and 433.1.103 - if the CCC of the cable is not less than 20A and ...the load current in any part of the circuit is unlikely to exceed for long periods the CCC of the cable.
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and as for 'especially these days', haven't we been moving in the direction of much smaller lighting loads?
Not with downlights.
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Possibly/probably. I did qualify my statement by saying that one would need an acceptable Zs. With a small circuit and 1.5mm² cable, I would have thought that it could well be possible, though.
A lot of things are possible but it can only be three metres anyway.
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There is, indeed - so, as above, how does that fit in with 2.5mm² spurs?
You have already answered that.
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Yes, but what started all this was the discussion about a situation in which there was no fuse in the plug, hence a thin flex from plug to appliance would not be benefitting from adequate overload protection from anything.
I don't see what you are getting at.
As long as it can cope with fault current until the opd operates it complies.
It doesn't need overload protection because it can't be overloaded so it could be said that it does have adequate overload protection.
I have had adequate protection against ultra violet the last couple of days - none.
JohnW2 wrote:
You mean by the fuse(s) in the plug(s)? If so, then change the socket (on a 1.5mm² dedicated circuit protected by a B50) to an immersian heater.
I did answer that.
Quote:
Is that not because such spurs are specifically 'dispensated'? If one relied on the regs in general, wouldn't the length of an unfused spur be limited to 3m?
Yes to dispensation and 433.1.103 - if the CCC of the cable is not less than 20A and ...the load current in any part of the circuit is unlikely to exceed for long periods the CCC of the cable.
Quote:
and as for 'especially these days', haven't we been moving in the direction of much smaller lighting loads?
Not with downlights.
Quote:
Possibly/probably. I did qualify my statement by saying that one would need an acceptable Zs. With a small circuit and 1.5mm² cable, I would have thought that it could well be possible, though.
A lot of things are possible but it can only be three metres anyway.
Quote:
There is, indeed - so, as above, how does that fit in with 2.5mm² spurs?
You have already answered that.
Quote:
Yes, but what started all this was the discussion about a situation in which there was no fuse in the plug, hence a thin flex from plug to appliance would not be benefitting from adequate overload protection from anything.
I don't see what you are getting at.
As long as it can cope with fault current until the opd operates it complies.
It doesn't need overload protection because it can't be overloaded so it could be said that it does have adequate overload protection.
I have had adequate protection against ultra violet the last couple of days - none.