On 27/01/2018 21:06, Robin wrote:
On 27/01/2018 20:18, wrote:
On Saturday, 27 January 2018 19:42:53 UTC, George MilesÂ* wrote:
I don't heat that bathroom, except for the frost heater which I had
on in December and may have kicked in once or twice.

Oh right.

In that case a 500 watt heater should keep the room reasonably warm.

Shouldn't really be on a lighting circuit but we did worse things in
past times.


I've never heard anyone poo-poo in principle a 500W floodlight on a
"lighting circuit" so why deprecate a 500W heater?Â* I wonder if it might
help to rebadge it as a "500W lamp for those sensitive to infrared
radiation"

ISTM you were right in your first reply ("What's the other loading on
the circuit?"). If that's OK I'd say the main thing is to label clearly
the circuit in the CU and in the paperwork so there's no confusion as to
which circuit powers the heater.

These days with low power lighting most lighting circuits can more than
cope.

There was a time with incandescent lighting when I recall guidelines of
how many rooms should be powered by a single circuit.

I also recall a 6A breaker tripping from having a 500W floodlight
running with other incandescent lighting.