Originally Posted by tomfl
I have never actually used shore power.
Good for you
So my first question is how realistic is it to bypass the inverter on my boat and go directly from shore power to the 120v stuff I want to use. Next just what is needed to do this. I am wondering if I could just connect some type of 30 amp power strip (if such a thing exists) to the 30 amp cord I use with the Honda.
There are two ways to do this.
1) You can use the shore power features of your boat. If it doesn't have any, you can add them.
2) You can just sort of run cords from the pedestal
to your AC and stuff.
#1 is the officially sanctioned ABYC compliant way of doing things. You have to have a shore power inlet on your boat, and a transfer switch, and you should have either an isolation transformer or a galvanic isolator
. All that stuff has to be in good working condition.
For #2 there are commercially available adapters that will allow you to run a heavy duty 20 amp extension cord from a shore power pedestal
and then plug in a power strip or something. There are several things to watch.
a) Don't overload anything. Add up the amps and if you're over about 16 or so for a 20 amp cord you're pushing it. Or measure with a meter. Use watts divided by 115 for stuff that lists watts but not amps.
b) Grounding is a potential problem and you can damage aluminum
saildrives etc this way if there are grounding problems on your boat, nearby boats, or in the marina wiring
. The workarounds and fixes are complex and are a topic in their own right.
c) Keep the metal blades on plugs clean and bright, check for overheating
connectors and replace them when you find them
d) There is an electric
shock hazard if handling cords/connectors that are wet particularly if the marina doesn't have some sort of ground fault or residual current
interrupter at the pedestal. I like to put outdoor connections between cords inside bread bags and tape them which helps somewhat.
e) The cheap
power strips are junk, be sure you get a good one, ideally one rated for 20 amps. See for example https://www.tripplite.com/waber-by-t...p-plug~UL62015
though that has the unusual 20 amp plug on it that nobody uses, though you could cut it off and replace it with a 30a shore power plug.
Hope this helps.