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**Murlo26** · 06-09-2011

Correct, the pump is an inductive electrical load and will have a high inrush current. If that inrush is high enough the fuse will do its job and blow.

This is part of the same fuse curve I was talking about. Say a 20 amp fuse hits 30amps it will blow instantly, but at 21 amps it will probably take 5-10 seconds depending on the fuse.

You can blow 20a or 30a fuses very easily with a lot less running amps. Meaning your actually running amps could be 12-13 amps only.

Inrush is typically 10-12 times the amount of your actually running amps.

06-09-2011	#16
Murlo26 Join Date: Dec 2009 Location: Lino Lakes Drives: 17 Honda Accord Posts: 4,041	Re: beaterX project thread Correct, the pump is an inductive electrical load and will have a high inrush current. If that inrush is high enough the fuse will do its job and blow. This is part of the same fuse curve I was talking about. Say a 20 amp fuse hits 30amps it will blow instantly, but at 21 amps it will probably take 5-10 seconds depending on the fuse. You can blow 20a or 30a fuses very easily with a lot less running amps. Meaning your actually running amps could be 12-13 amps only. Inrush is typically 10-12 times the amount of your actually running amps.