NOCO GCP1 AC Power Port Plug, 15A 125V Waterproof

The NOCO GCP1 is an AC power port plug that gives you a clean, permanent way to run 125-volt power through a bulkhead, transom, or cabinet wall. Instead of jamming an extension cord through a cracked hatch or a partly open door, you mount this flush port once and route power exactly where you want it. It's rated for 15 amps at 125 volts, and it ships ready to install with everything you need in the box.

Most boaters rig this for an onboard battery charger or maintainer. You mount the charger inside a locker or engine space, wire it in, and bring the AC lead out to the GCP1 so you can plug into shore power or a generator without opening the boat up. It works just as well on an RV, a truck camper, or a utility trailer where you want a tidy, weatherproof spot to feed 125-volt power inside. Plug and play means there's no controller or programming. Power in, power out.

The port doubles as a manual power disconnect. Pop the plug and seat the cap, and the AC path is broken at the port. That's a handy safety habit when you're storing the boat or working on the charger, since you don't have to trust a breaker three compartments away. The water-resistant pressure-fit cap keeps spray, rain, and dock hose-downs out of the contacts when nothing's plugged in. Seat it fully every time and it keeps its seal.

Install is straightforward. NOCO includes three #8 by 1-inch self-tapping screws and a 16-inch Type B extension cable, so you're not hunting for hardware. Pick a spot with a little room behind the panel, because the plug body needs roughly two inches of clearance so the cable doesn't bind when it's seated. On older fiberglass with brittle gelcoat, drill 3/32-inch pilot holes before you run the self-tappers. That keeps the surface from cracking around the screw heads. The low-profile black housing sits close to the surface and stays out of the way of feet, lines, and gear.

Watch your load. Fifteen amps at 125 volts is plenty for a single charger, a small fridge, or a power tool, but it's a single-circuit port, not a distribution panel. Don't stack a fridge and a charger and a space heater on it and expect it to hold. Size the port to one device and you'll never think about it again. If you're feeding it from a 30-amp shore cord through an adapter, that's fine, but the port itself still tops out at 15 amps, so keep continuous draw under that ceiling rather than running it wide open for hours.

The GCP1 is UL approved for its 125-volt AC rating, which keeps most marine insurers happy and tells you the housing and contacts met a recognized safety standard. If you're mounting it in or near an engine space, talk to an ABYC-certified tech about ignition-protection requirements for your particular install, since that's a boat-specific call, not something the port decides for you.

The included 16-inch pigtail is sized for short runs from the port to a nearby charger or panel. If your charger lives farther away, add a length of marine-rated AC cord to bridge the gap rather than stretching the lead. And because the black housing lives outdoors, give it an occasional wipe and keep the cap seated when the port's not in use so UV and salt air don't work on it.

Who's this for? Anyone tired of cords pinched in hatches and doors. First-time owners get a simple, safe way to bring shore power aboard. Seasoned cruisers get a reliable manual-disconnect port they can cap and forget. It's a small part that solves a nagging problem, and it does it without any fuss.