Also Sprach Ockmel :
Should I only run my bilge pump when the engine is off...or can it run
safely when the boat is under power and running?

It's OK either way. If you store your boat in the water, and you have an
automatic float switch, it's not a bad idea to install a cycle
counter. It counts each time your pump runs, so if you develop a small
leak at a fitting, you will see a large increase in the number of cycles
on the counter.

Dan

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