Camco 55552 PowerGrip 50 Amp Locking Adapter Cord

If you've ever wrestled a stiff 50 amp cordset onto a marine-style power inlet in a crosswind, you already know why the handle on the Camco 55552 PowerGrip matters. This is an 18 inch adapter cord with a 50 amp male plug on one end and a 50 amp female connector on the other, built to bridge a marine-style 30 or 50 amp power inlet to a standard power source at the dock. The molded plug head handle gives you something solid to push and pull on, so you're not yanking on the cord jacket every time you seat or break the connection.

The connection locks, and that's the part boaters care about most on an exposed slip. A shore power plug that backs out in chop can arc, and an arcing connection is how you cook a plug or worse. The PowerGrip's locking design holds the two halves together so the plug stays put when the wind picks up and the boat starts working against her lines. The waterproof housing keeps spray and rain out of the contacts. It's the difference between a connection you check once and forget, and one you're babysitting all weekend.

Marine-style power inlets are a different animal from a standard RV plug. They're built to lock and seal because a boat lives in a wetter, harder-working environment than a camper in a dry lot. Water, salt, and constant motion all conspire to loosen a connection over time. That's the whole reason this adapter locks and seals the way it does, and it's why you don't want to substitute a loose household-style fitting to save a few dollars.

Here's what it actually does. It adapts a 50 amp male to a 50 amp female over a short 18 inch run, so you can mate a marine-style power inlet to a standard 50 amp source without hard-wiring anything at the panel. It works with both 30 and 50 amp marine-style inlets, but read that part carefully. To pull power from a 30 amp pedestal, you'll still want a separate 30 amp adapter in the chain. The 55552 handles the 50 amp side of the connection. It doesn't step the service down for you.

On the electrical side, treat this as one link in the shore power chain, not the whole thing. Pair it with a proper marine-rated 50 amp cordset. Six gauge conductors are what you want for a real 50 amp draw, so the whole run stays cool when you're pulling load. A lighter cord rated for less will heat up fast when the air conditioning, the water heater, and the battery charger all come on at once. The 55552 itself is just the 18 inch adapter section, so the gauge and length of your main cordset are still on you.

Who's this for? Boaters with a marine-style shore power inlet who tie up at pedestals wired for standard 50 amp twist-lock service. Trawlers, larger cruisers, and liveaboards running 50 amp systems are the usual crowd. The short 18 inch length keeps things tidy right at the inlet instead of leaving a loop of heavy cord to trip over. Just plan your routing first. If your inlet sits deep in a lazarette or behind a tight stainless plate, 18 inches doesn't leave much slack to work with.

The handle really earns its keep in cold weather, when you're working the plug with gloves on and your hands are half numb. Grab, twist, lock, done. Camco has been building RV and marine power gear since 1966, so this isn't their first adapter, and it shows in the little things like that handle. Keep the contacts clean, give them a quick wipe now and then, don't coil it up soaking wet at the handle joint, and it'll give you season after season of solid dockside connections.