On 2014-01-25, Jim Wilkins wrote:
"Jasen Betts" wrote in message
qOn 2014-01-25, Jim Wilkins wrote:
"DaveC" wrote in message
Why do you need two fuses for a single-phase motor?
because it's got two live inputs, and either could develop a short
to ground.

The panel circuit breakers protect the wiring from that. The
separate fusing is for a motor overload condition.

Fuses ARE heaters. They have thermal action and the slow ones are
meant for motors. I would say that fuses are "overload heaters for the
poor".

I spent some effort when replacnig electricals on my three phase
bandsaw, and finally found a contactor with the exact heaters that the
motor needed. Very happy about it.

i