Blowing 60 Amp fuse

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Posted by Joe Johnson, Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.

Posted on 3/22/99 6:49 PM MST


In Reply to: Re: Blowing 60 Amp fuse posted by Daniel on 3/22/99 12:19 AM MST:



When it comes to stall current the Delphi Power Sliding Door Motors are babes in the woods!

I think the Fisher Price motors are about 70Amps and the Drill motors are over 100Amps.

Both times we blew that fuse, I think that we basically were picking up the puck with our arm, that put one 30Amp PSD motor in stall. With the extra weight on the wheels we stalled all 4 wheels which means 2 drill motors and 2 Fisher Price motors. Even with each circuit nominally limited to 30Amps by the circuit breakers, that still adds up to 150Amps.

I haven't looked it up in a while, but from memory, I think the 60Amp fuse is rated to blow in something like 20 seconds at 200% nominal rating. So... At 150Amps, it is very possible to blow that fuse in considerably less time

Joe J.