500s motors on relays?

[Dad1279]

Originally Posted by Jared341

I never like putting a motor which can draw (vastly) more than 20A in line with a 20A fuse under any circumstances. Even if the motor *shouldn't* stall in its application, I would not feel comfortable.

The fuse / breakers are there to protect the motor and wring. So depending on the mechanism, I can see an advantage. If it is designed to never need more than 10 amps, at a constant speed, the fuse will (should) prevent a smoked motor in case of stall.

[Al Skierkiewicz]

Dad,
While that is generally the case, the fuse on the Spike is meant to protect the contacts of the relays inside. The rule about using a breaker came from a manufacturer's recommendation for the Spike driving a compressor.