Jadnashua
Retired Defense Industry Engineer xxx
Ideally, a CB or fuse is as close to a dead short when not blown or tripped. So, figuratively, if it was say 1-ohm at load, that equates to a high resistance. Since the heating coil of a dryer may only be 15-ohms (a quick guess, but in that order of magnitude), 1 ohm is a big part of it, and the fuse will generate a fair amount of heat.
High resistance in this case doesn't necessarily mean hundreds or thousands of ohms, which would drop the total current available so much, little heating would occur; even fractions of ohms on a high current circuit will cause significant heating.
Run the numbers yourself...
High resistance in this case doesn't necessarily mean hundreds or thousands of ohms, which would drop the total current available so much, little heating would occur; even fractions of ohms on a high current circuit will cause significant heating.
Run the numbers yourself...