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Old 17-02-2014, 18:08   #16
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Re: Fuse size for bilge pump

and wire that pump direct to the battery. I've seen 3 boats sunk at the dock with bilge pumps accidentally switched off.
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Old 19-02-2014, 05:19   #17
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Re: Fuse size for bilge pump

I want to clarify and underline Maine Sail's (and others) points: pumps and blowers can experience locked rotor phenomenon where the rotor is, well, locked.

If this occurs, and unless the motor is protected by the properly sized OCPD, it will continue to try and operate and generate sufficient heat to melt the motor housing! This is why pump and blower manufacturers are required to provide a recommended over current protection device size in their installation instructions.
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