OK, so our toaster and small oven seem to be heating poorly. Checked voltage at the plugs and see only 101 volts. Checked voltage at both shore power outlets on the pedestal and get 117 on both of them. Fired up the generator and get 117 volts at the outlets on the boat which is what I should be seeing. My shore power comes in via dual 30amp feed lines into a reverse Y adapter, 50a cord and into an isolation transformer which outputs the power to 2 individual 120volt circuits labeled shore power 1 & 2.

Measured voltage at the wires exiting my shore power inlet, 118.9 on both red and black legs to neutral. Measured between both red and black hots and get only 205 volts. Hmmmm.

Theory, they are using a 208v transformer to get dual phases which leave me under powered? Make sense? I do need probably at least 240v into the isolation transformer I believe in order to get proper single phase power on both legs. Any electrical experts out there?

Everything works fine on board with exception to heating elements which are weak. Has probably been this way forever but last week when we had a hard time making toast I investigated a little more to see why.

My shore power panels shows 215volts however not to sure how accurate that is.

Any advice is much appreciated.