The frost heater turns itself on when the temperature is less than 3 or 5 degrees and thus is off for over 11 months a year (and much cheaper than having 100watt bulbs on 24/7)

I guess it should be on a fused switch, hopefully on the same circuit as the bathroom light, fan, and a few other lights.

[g]

On Saturday, January 27, 2018 at 5:21:43 PM UTC, George Miles wrote:
Is it OK to put my 500 watt frost heater on a lighting circuit?
It's so that the plastic header tank doesn't freeze.
Just count it as 2 amps for calculating the length of 1.5mm cable allowed?

Igenix IG5005 Frost Watch Convector Heater, 500 W - White
https://www.amazon.co.uk/Igenix-IG50.../dp/B00GB5HHFE

thanks
[george]