30A to 110 adapter

boatman37

Well-Known Member
Jun 6, 2015
4,248
pittsburgh
Boat Info
2006 Crownline 250CR. 5.7 Merc BIII
Previous: 1986 Sea Ray 250 Sundancer. 260 Merc Alpha 1 Gen 1
Engines
5.7 Merc BIII
So given there is a chance our boat may be sitting in the driveway all year I'm thinking I need an adapter to connect my shore power to my house. What adapter do I need? Pretty sure I know but want to be positive before I order it.
 
This one here:
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1585788464919145547712009767293.jpg
 
They make it in a pigtail too if that helps.
 
yep
 
I have the pigtail type. I prefer that because shore power cables are heavy and the pigtail can be plugged into wall socket without falling out under its own weight.
I had thought about that. I was thinking it would be pulled down and almost falling out of the outlet
 
I made one for my boat for about $25.00 or so by getting the adapters at Lowes and a foot of heavy 3 wire 6/0 gauge extension cord. Be sure you use the proper extension cord coming from the house something no smaller than 12 gauge and no longer than 50 ft. Another thing is to hook the wires to the adapters in the proper order. pos to pos neg to neg and ground to ground this is very important. It is just like the pigtail except the 120 side is male so you can plug it into the female end of the extension cord
 
Besides the charger, in the spring I do the water system first and fill it. Then the water heater goes on. Mother was right, warm water does clean better. It’s also makes washing a boat in 40 degree weather not as painful.
 
That's what I do. The adapter is at the boat, I run regular extension cords to house outlet for power. All you're really running is the battery charger.

That’s how I set mine up for use on the hard for the winter.
Y adapter from boat, pigtail to Y adapter, 12/3 100’ extension cord to pigtail coming out under shrinkwrap, coiled under boat, hung from stand with bungee and ready to deploy and plug in when I’m working in the boat.
Not allowed to leave plugged in when not there working on boat.
 
Besides the charger, in the spring I do the water system first and fill it. Then the water heater goes on. Mother was right, warm water does clean better. It’s also makes washing a boat in 40 degree weather not as painful.

Make sure you have a heavy-duty/gauge extension cord. The greater the load the thicker the wire. I know we have some electricians on here that can elaborate in more technical terms, but I think you know what I'm talking about.
 
Make sure you have a heavy-duty/gauge extension cord. The greater the load the thicker the wire. I know we have some electricians on here that can elaborate in more technical terms, but I think you know what I'm talking about.
12 AWG is all you need if your plugging into a home outlet and running it less than 100 feet.

Your home outlet is probably on a 20A breaker which would be wired with 12 AWG. Some older homes may only have a 15A breaker/fuse and wired with 14 AWG.
 
I guess being an electrician and maintenance guy, I take things for granted. I wanted to do the same thing for home for charging batteries and such once I got my dancer. So, I rummage around the garage. Found a 30 amp Hubbell twist-lok connector and a 20 amp Hubbell cord cap. Wired a 12" piece of 12/2 romex between them and plugged in. I just tried to quote this through my supplier and realized quickly it is cheaper to buy one already made from Home Depot or similar.

https://www.homedepot.com/p/AC-WORK...-L5-30R-Female-Connector-RV515ML530/302002610
 

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