08-17-2018, 08:53 AM
I have a 1994 4000 express, and it for certain takes the 50 amp 240 input and splits it into two 120 volt legs. I have a single 30 amp connector as well, but have never connected it, so I don't know how it is wired and what will work. I have checked each of my AC's and all are specified as 120 volt and replaced my water heater with a 120 volt unit (trust me, that is a job you really don't want to take on).
Given the problems you seem to be having at the marina power, I would recommend adding a galvanic isolator if your boat does not have one. My boat was burning through zincs, and I had my mechanic who is a graduate of Merchant marina academy with an engineering degree, perform a galvanic survey. The boat checked out clean, all bonding system correctly integrated. He then did a final check on the power post and found .05 volts being back fed into the boat on the ground wire. That was the source of the problem. We added an isolator and my zinc consumption returned to normal.
Given the problems you seem to be having at the marina power, I would recommend adding a galvanic isolator if your boat does not have one. My boat was burning through zincs, and I had my mechanic who is a graduate of Merchant marina academy with an engineering degree, perform a galvanic survey. The boat checked out clean, all bonding system correctly integrated. He then did a final check on the power post and found .05 volts being back fed into the boat on the ground wire. That was the source of the problem. We added an isolator and my zinc consumption returned to normal.
