Blowing 30amp fuse by isolator on 2001 san.

[hyparks]

There's a 30 amp fuse in its own little holder next to the main isolator by the driver feet. In 4 outings on the boat this fuse has blown twice. Didn't have anything on other than stereo and perfect pass. Stereo has its own 10 amp fuse so think that would have blown first.
Any ideas?
Thanks

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[mrbobolina]

Bad ground somwhere. Ground may be tight, however the connected may be on corrosion or paint between. If your pp and stereo are the only two things on the line, check all the lines and look for one that may be lose. Good times.

[hyparks]

Ok thanks. I did find perfect pass live and earth wires coroded so cut them back and re connected. Stereo seems fine but need to try and get to the amp because that does not look the best. The amps behind drivers foot board with all breakers on it. Need to start removing wires and breaker box etc to get to it though. Not good. Lol

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