Reddit mentions: The best boat shore power cords

This IS a 50A 125V plug. there is a difference between a 50A 125V and 50A 125/250V plug in the US

Your shore connection is a NEMA type "SS1" known as the 50a 125V (the male plug will likely have 50a 125V written inside of it).

Other posters here are getting this confused with the more common NEMA "SS2" 50a 125/250 which will say 50 125/250 inside of it. They are not the same plugs.

This adapter will connect your 30a cable to that plug:

https://www.defender.com/product.jsp?path=-1|328|2290035|2290037&id=584322

​

and here is another version of the same cable on Amazon but cheaper/ of unknown quality.

https://www.amazon.com/Conntek-Marine-Pigtail-Adapter-Connector/dp/B001TNOJ1S/

​

This chart might help:

https://www.coxhardware.com/pdf_files/NemaPlugChart.pdf . Look at TYPE SS1 and you will see it matches your photo.

Nope, that's pretty much exactly what I would've done if I'd been any more confident in my "electrician skills" ... instead I bought and put this adapter on the plug instead.

It seems to be working just fine and not tripping any circuits (yet), so there's that. I'm honestly more worried about the electricity code aspect of it.

This was one of the only ones I could find - http://www.amazon.com/Conntek-Locking-Adapter-Straight-Connector/dp/B001KQEK7M/ref=sr_1_12?ie=UTF8&qid=1374000975&sr=8-12&keywords=5-15+l5-20p

Kind of expensive, and do I have to worry about it being outdoors or near a pool?

Edit, this seems to be a much better deal - http://www.amazon.com/Coleman-Cable-9-Inch-Generator-Adapter/dp/B00004SQGJ/ref=sr_1_3?ie=UTF8&qid=1374007638&sr=8-3&keywords=l5-20p

Comments are people doing the same thing, so I guess this is the way to go.

This is a 50 amp 125V plug. You can't step down from 50 amp to 30 amp unless you have a pigtail like this: https://www.amazon.com/AMRM-121A-Marinco-Pigtail-Adapter-Locking/dp/B079TYS7BB

Maybe this unit or this unit would arrive just a little bit faster (prime vs china)? Second one is even UL rated.

Just follow /u/jjcarrol 's advice and be careful. Do not leave the unit unattended while plugged in like this. You have no guarantee its only going to pull 2 Amps, and if anything goes amiss, your insurance company will politely but firmly decline to cover you. A KillAWatt-style meter would be advisable.

Highly suggest replacing that retractable power cable with this Park Power Conversion kit from Amazon. I have done this with our pop up and our new travel trailer. No more shoving the cord inside, saving on longevity of cord/wear and tear, AND one less hole for water/critters to get into.

I used to live aboard in a blue-water 33" sailboat. Before I bought it, it had been either stuck by lightning (FL) or the charger had a massive failure, and made the house batteries explode.

I rebuilt the entire electrical system on that boat, and also did electrical on several other boats. I really recommend having one of these Marinco 30 Amp 125V Inlets, Round, Stainless Steel mounted. https://smile.amazon.com/dp/B000NI01TO/

The power cord itself has a ring that screws onto the inlet on the boat, and then you use a line to support the cable going to the power bollard on the dock.