Power station spec sheets list their AC outlets by NEMA configuration, the North American standard for plugs and receptacles. The name tells you what plugs in. The number before the hyphen is the configuration (voltage, number of wires and grounding), the number after it is the current rating in amps, R means receptacle (the socket on the station) and P plug. An L in front means a locking outlet: the plug’s curved blades twist to lock in place. TT-30 is an RV standard outside the numbered scheme.
An outlet’s amp rating is the most that type of outlet is built for, not what the station can supply. The station’s inverter sets that: see watts, surge and boost mode.
120 V household outlets
NEMA 5-15R
The standard three-prong household outlet: 125 V, 15 A, with a ground pin. Almost everything with a normal plug uses it. 37 stations here have them.
NEMA 5-20R
Looks like a 5-15R but one slot is T-shaped. It is rated 20 A and also accepts ordinary 5-15 plugs, so for most devices the two are interchangeable. 77 stations here have them.
NEMA 1-15R
A two-prong outlet with no ground: 125 V, 15 A. It suits double-insulated devices such as phone chargers and lamps, but not three-prong plugs. 15 stations here have one.
RV and 30 A 120 V outlets
TT-30R
The standard 30 A RV outlet, found at RV park pedestals for travel trailers and smaller motorhomes. It is 120 V only, despite looking a little like 240 V dryer outlets. A station with a TT-30R can plug straight into an RV’s shore-power cord. 34 stations here have one; see the RV-ready ranking.
NEMA L5-30R
A locking 125 V, 30 A outlet, common at marinas and on some RV and generator cords. 0 stations here have one.
120/240 V split-phase outlets
These four-wire outlets carry two 120 V hots, a neutral and a ground, so they deliver 120 V and 240 V together, like a home panel. See split-phase 240V explained.
NEMA L14-30R
A locking 125/250 V, 30 A outlet. It is the usual connection for a generator or power station feeding a home transfer switch or generator inlet box. 7 stations here have one; see the L14-30 ranking.
NEMA L14-20R
The 20 A version of the L14-30: locking, 125/250 V, four wires. 0 stations here have one.
NEMA 14-50R
A non-locking 125/250 V, 50 A outlet. It is the shore-power outlet for larger RVs and a common home EV-charging outlet. On a power station, the inverter limits the real output well below 50 A. 5 stations here have one; see the 14-50 ranking.
NEMA 14-30R
A non-locking 125/250 V, 30 A outlet, the kind many electric clothes dryers plug into. 0 stations here have one.
240 V-only outlets
These three-wire outlets have two hots and a ground but no neutral, so they supply 240 V only, for equipment such as welders and some commercial appliances.
NEMA 6-20R
A non-locking 250 V, 20 A outlet. 3 stations here have one.
NEMA L6-30R
A locking 250 V, 30 A outlet, used for welders and heavy tools. 0 stations here have one.
Sources
- Wikipedia, NEMA connector: the naming scheme and the ratings and common uses of each configuration.
- Leviton, 2710 locking receptacle: the L14-30R’s 30 A, 125/250 V, four-wire rating and its use with generators and transfer switches.
- Outlet counts: each product’s manufacturer specifications, linked from its page.