The breaker is too small, the cord is too small, the starter motor on that thing draws 18 amps. It will trip any 15 amp breaker and any 20 amp breaker with something else running, any cord will drop the amp below the starter winding min. make sure nothing is running, separate circuit if you can find one, no extension cord, and a 20 amp breaker in the fuse box. if that is not the problem , then something is shorting out when you hit the switch. Check the wiring on the pump and make sure all is secure, no loose wires, no sparks. My compressor won't run on any old plug, has to be 20 amp, has to be without a cord or with a heavy cord, and has to be hot out, if it is cold, forget it!. We have to keep the compressors in a heated room so they will run in the winter. Hope this helps.
This is a small pump sprayer running on a 12 volt battery. It says 10 amp fuse on the pump itself.
Oh, I thought you had a big one there. 12 volts huh? , Let's see, Did you try a bigger fuse? Is it automotive type fuse? Put in a 15 amp, wait till dark, hit the switch look for sparks, something has to be shorting out, the only way to find it is at night, have a couple people looking at it, when the switch goes on, it shorts out somewhere. Hope this helps.
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