"Mike Tomlinson" wrote in message
...
En el artículo , charles
escribió:

I had to upgrade the 6A lighting breaker to 10A in our village hall after
2
500w floodlights were added to the lighting circuit.

I was going to ask if the wiring is up to it, but on googling see that
1mm^2 is ok to 10A and 1.5mm^2 to 15A.


It's not quite that simple.

1mm is OK for 16A when clipped in free air and 1.5mm for 20A.

Surround that cable with insulation and you half the current carrying
capacity.

Now that is usually only a problem IF you are near full load or IF you have
very long cable runs so that the earth loop is too high to trip the MCB in
the event of a fault.

The second one is not very likely to occur on most properties. The first one
depends on the lights that are fitted. A couple of 500W halogens could shove
things over the limits

--
Adam