I read in my new furnace installation manual that: “It is recommended that furnace be provided with a separate “circuit protection device” electric current.”
My old furnace had a fuse in a box next to the box on the furnace with the switch that turns it on and off. The installers said they don’t use fuse boxes any more. I am thinking maybe they should and I should insist on one being installed. Lot of electronic stuff inside and it would give added protection from a surge. Is the "circuit protection device" a fuse and should I insist that one be installed. Reasons.