Shore power won't engage
I have an '82 O'day 28 with a 30amp shore power system. In the last few years the double throw switch to connect to shore-side power has worked at first intermittently, depending which dock I used. Now it won't engage at any dock. The boat is primarily a mooring queen and occasionally I like to use the battery charger to fully top off the batteries.
A neighboring boat suggested that I may have a grounding problem. My questions are, where do I begin to find a grounding problem in the AC system; and do those double throw shore power switches "fatigue" or fail that often? There is power to the vessel and the polarity is light is extinguished (as should be). The DC ground is fine.
Thanks for any help you can provide,