Is it OK to wire a 3kW Immersion Heater (with 2.5mm T&E from 16A MCB to ?20A isolator) with 1m of 1.5mm (heat resistant) flex, or does it need to be 2.5mm???
All the wholesalers only seem to have 1.5mm on the shelf, and say it will be OK, but I just want to get a second opinion!
All the wholesalers only seem to have 1.5mm on the shelf, and say it will be OK, but I just want to get a second opinion!