Pmcsurf1
Senior Member
I think my isolation transformer might be bad.
Last marina we stayed at was showing 100v at the panel in boat. I talked to a electrician (unrelated to this) and he said this marina was notorious for low voltage. Long runs down docks etc. I assumed it was 100v coming out of the pedestal. I asked my neighbor. He said he had 118v on is panel. Next step was to check voltage at pedestal. 118v. Next was voltage on my shore power connection cable. 118v. Next was check aft shore power voltage. (I was bow in) 100v at panel. Both aft and forward hookups showing 100v at panel. I started gen set. 120v at panel. I called my electrician and asked if my gen set goes through the transormer and he said no.
It seems my power comes in forward and aft, goes to isolation transformer and then back to panel.
My questions are this.
Do isolation transformers "routinely" go bad? What would cause the loss of voltage?
Info. 2004 Mainship 400 with original transformer. Charles 12KVA iso transformer.
Any electrician types with an idea?
Last marina we stayed at was showing 100v at the panel in boat. I talked to a electrician (unrelated to this) and he said this marina was notorious for low voltage. Long runs down docks etc. I assumed it was 100v coming out of the pedestal. I asked my neighbor. He said he had 118v on is panel. Next step was to check voltage at pedestal. 118v. Next was voltage on my shore power connection cable. 118v. Next was check aft shore power voltage. (I was bow in) 100v at panel. Both aft and forward hookups showing 100v at panel. I started gen set. 120v at panel. I called my electrician and asked if my gen set goes through the transormer and he said no.
It seems my power comes in forward and aft, goes to isolation transformer and then back to panel.
My questions are this.
Do isolation transformers "routinely" go bad? What would cause the loss of voltage?
Info. 2004 Mainship 400 with original transformer. Charles 12KVA iso transformer.
Any electrician types with an idea?