On 26/07/2014 22:58, Old Codger wrote:
On 26/07/2014 22:38, ss wrote:


Now my question, I have recently purchased a 20 watt LED external
floodlight that comes with a 13 amp square plug, now I need to increase
the length of the cable and was looking to put a 5amp round plug on it
at the same time so I can use from the unused round pin socket.

Will this be safe to do so? With regard to Amps/wattage etc

Secondly I may purchase another 10 watt floodlamp so would it be ok to
run both from that 5 amp socket?

Should be. Assuming the wiring behind the socket is correct, and there
is no reason from what you say to suspect otherwise, then the
theoretical maximum load is 1250 watts (1.25KW), say 1KW (1000 watts) to
allow for inefficiencies.



Yes, but hang on a bit. Chances are that this socket is connected to a
lighting circuit[1].

If so, that circuit will probably be protected by a 5amp fuse or 6amp
breaker - which will limit the *total* current in the circuit. So, even
though the round-pin socket itself may be rated at 5amps, how much it
can *actually* safely deliver will depend on what else is on the
circuit. Drawing 5amps from it may well trip the circuit if there are
lots of other lights on it.

Having said that, I'd be very surprised if adding two 10watt loads would
cause any problems.

[1] The OP really needs to determine which circuit it's on - either by
tracing the wiring or by pulling all the fuses/breakers and then turning
them back on one at a time, and seeing what works and what doesn't each
time. [Every D-I-Y-er should document their electrical installation in
this way in order to know where to look when something stops working -
quite apart from knowing which fuse to pull when working on a particular
part of the system.]
--
Cheers,
Roger
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