the light switch has a main fuse as well as 2 bimetallic contacts [1=front, 2nd=back] that will open if there's too much draw

only add-on fuses that are useful is on optional accessories

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics