I have been reading posts here for many years. Rarely have I ever posted (maybe never). I am trying to clear up some contradictory information I keep getting. I am in the process of rewiring my 1985 Tayana 37 Hull
#450. I am working on finalizing my electrical
drawings and need help with a question... Before I ask the question a little background on me. I am a computer engineer
who previously was a component level electronics engineer
. I also worked for the Cable TV company for many years and held every technical role in the company you could. I have done whole house wiring
and know the building code around residential electrical
and have also read the ABYC standards for marine
My plan... I am installing a simple AC system on my boat
. 30A 120V service
. I have no plans for an inverter
. I am simply going to have a 30A 120V SmartPlug on my boat
. That will go to an isolation transformer and then to my AC panel. The AC panel will simply feed the water heater
, battery charger
and 7 outlets. That is it.
My question... Reading the ABYC standards they call for ELCI protection for the boat. I have been told by a surveyor
electrician that I DO NOT
need an ELCI breaker between the shore power
inlet and my isolation transformer as long as it is 10' or less. A simple 30A breaker between shore power
and the isolation transformer will do. Again, that breaker needs to be installed at, or less than, 10 feet from the outlet. But no need for ELCI. This seems to make sense to me.
Others have told me that I DO
need the ELCI no matter what. Even if it is only protecting a 5' run between the shore power inlet and the isolation transformer. I have a hard time wrapping my head
around that since it is such a small distance. Do I really need an ELCI for a 5' section of earth ground that runs from the shore inlet power to the isolation transformer?
Oh, and you may want to steer me towards the Tayana Owners Group. I am very aware of hat site as I am one of the site admins for the TOG News site. :-)
Thanks for any advice!