Join Date: May 2009
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Was the original 10-amp fuse the size specified by the maker? If so I would be very hesitant in upping the fuse amperage as you might do damage to what is probably a fairly expensive device.
Usually the power demands for electric motors are highest when a load is first placed on them, then as the rev up to speed the power demand drops off. Wonder if the power demands for your motor gradually builds up over the 2 hours until the fuse blows or if you get a spike that blows the fuse.
Only a couple things I could think of offhan, one is the wire being too small for the demands being put on it either because it was too small to start with or because the run is too long for that guage carrying that current demand. Or you could havea bad connection which as the motor runs is heating up and finally shorting out.
Sufficient unto the day is the evil thereof
S/V Enchantress -- Morgan 45