Camco 55185 30 Amp to 50 Amp Dogbone Power Adapter

The Camco 55185 is a 30-amp male to 50-amp female dogbone adapter, and it solves one very specific problem at the dock or the campground. Your rig or boat has a 50-amp power inlet, but the power you've got to plug into is a 30-amp source. This little adapter bridges that gap so you can still get shore power without hunting for a different cord.

Here's the part worth understanding before you buy. The male end plugs into a 30-amp source, and the female end fits a 50-amp inlet. That means it steps a 30-amp supply up to a 50-amp connection, but it still only delivers 30 amps of actual power. You're not getting full 50-amp service out of it. So you'll want to watch your loads. Running the air conditioner, the water heater, and a couple of high-draw appliances all at once on a 30-amp feed will trip the breaker at the pedestal. Think of it as a way to stay connected, not a way to double your power.

The plug head has a molded handle built right into it. Sounds like a small thing. It isn't. Anyone who's tried to wrestle a stiff shore power plug into a recessed inlet with cold hands knows the value of a real grip. You get one-handed insertion and, just as important, a solid pull for removal. No yanking on the cord itself, which is how connectors get damaged over time.

This is a non-locking adapter. It plugs straight in, no twist-lock alignment, no collar to thread. That makes hookup fast. It also means the connection relies on a friction fit, so if you're somewhere with a lot of movement or tension on the line, take a second to make sure it's seated and stays put. A simple strap can keep everything snug if the cord tends to sag.

One thing we'll always be straight about: this adapter is not waterproof. The body isn't sealed against driving rain or standing water. That's normal for a dogbone like this, but it means you should make your connection under a pedestal cover, inside a protected shore power bay, or somewhere the contacts stay dry. If it's exposed to weather, keep it covered and check the contacts now and then for corrosion, especially in salt air.

Who's this for? RV owners with a 50-amp inlet who pull into a site that only offers 30-amp service. Boaters with a 50-amp shore power inlet who need to tie into a 30-amp dock pedestal. It's a common enough situation that a lot of folks keep one of these in the shore power bag as a just-in-case. Cheap insurance against showing up somewhere and finding the wrong receptacle.

A few field notes. Pair it with a proper 30-amp cord rather than trying to stretch it across a long gap on its own. Keep the 30-amp limit in mind and stage your big loads instead of running them together, so the water heater and the air conditioner aren't both hammering the feed at the same moment. And give the connections a quick look every so often for warm spots, which is your early warning that something's drawing hard or a contact isn't clean. A warm plug never fixes itself, so catch it early.

Camco has been building RV and marine power gear since 1966, and the 55185 is the kind of simple, honest piece that just works. It's not fancy. It doesn't need to be. It gets you connected when the receptacle doesn't match your inlet, and it does it with a handle that makes the job easier. For the price, it's the sort of thing you buy once and forget about until the day it saves your trip. Toss one in the shore power bag and you'll be glad it's there.