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NEMA L16 are three-pole and ground connectors rated for 480 V. Intended for three-phase circuits. NEMA L8 are two-pole and ground connectors rated for 480 V. Intended for three-wire hot-hot-ground circuits. NEMA L9 are two-pole and ground connectors rated for 600 V. Intended for three-wire hot-hot-ground circuits. NEMA L13 series devices are three-pole, three-wire, non-grounding devices for three-phase 600-volt devices. NEMA L11 series devices are three-pole, three-wire, non-grounding devices for three-phase 250-volt devices. NEMA L12 series devices are three-pole, three-wire, non-grounding devices for three-phase 480-volt devices. NEMA L2 series devices are two-pole, two-wire, non-grounding devices for 250 volts single-phase. NEMA L1 series devices are single-pole plus neutral, two-wire, non-grounding devices for 125 volts single phase. NEMA 22 series devices are specified for three-pole plus neutral, five-wire grounding devices for 3-phase 277/480Y supplies. NEMA 21 series devices are specified for three-pole plus neutral, five-wire grounding devices for 3-phase 120/208Y supplies. The ground pin is round, like those on straight-blade NEMA grounding devices. NEMA L18 are four-pole no ground connectors rated for 120/208 V. Intended for wye three-phase circuits. NEMA 15 are three-pole and ground connectors (phase A, phase B, phase C, ground) rated for 208 V. Intended for delta three-phase circuits with ground and no neutral.

NEMA L22 are four-pole and ground connectors rated for 277/480 V. Intended for wye three-phase circuits with both neutral and ground. There are however NEMA L22 series locking devices for 20- and 30-ampere devices specified and available for these applications. NEMA locking connectors manufactured by any company. There are however NEMA L23 series locking devices for 20- and 30-ampere devices specified and available for these applications. NEMA L5 connectors are a series of two-pole and ground locking connectors rated for 125 V. L5-30R receptacles are common at marinas that provide power to docked boats. The NEMA TT-30 (TT stands for Travel Trailer) connector is a 120 V 30 A recreational vehicle standard (hot-neutral-ground), also known as RV 30. The TT-30R receptacle is commonly available in nearly all RV parks in the United States and Canada, what is electric cable and all but the largest RVs manufactured since the 1970s use this plug to connect to power feeds. The 6-50 is a smaller size receptacle lacking a neutral fourth prong, exclusively providing 240 V, also used for electric vehicle charging station purposes. All shoes need some way of being moved clear of the current rail, usually for emergency purposes.

This is an expedient way to provide that protection at the receptacle itself. These sockets and plugs are four prong (see receptacle chart above) grounding devices (hot-hot-neutral-ground) available in ratings from 15 to 60 A. The voltage rating is 250 V. Of the straight-blade NEMA 14 devices, only 14-50 and 14-30 are in common use and either may be used for home charging of electric vehicles. Of course there are exceptions and we will see some of them later. Most NRTLs will also require that the manufacturer's facilities and processes be inspected as evidence that a product will be manufactured reliably and with the same qualities as the sample or samples submitted for evaluation. Specific exceptions apply, such as a cable running to a switch and back (known as a traveler) where the white wire will be the hot wire feeding that switch. Wire types for North American wiring practices are defined by standards issued by Underwriters Laboratories, the Canadian Standards Association, the American Society for Testing and Materials, the National Electrical Manufacturers Association, and the Insulated Cable Engineers Association.

Most wiring is put in non-flexible conduit, usually EMT because of its cost and durability. For power circuits, the color-coding uses the same colors as residential construction, and adds the additional wires used for three-phase systems. AC systems always use overhead wires, DC can use either an overhead wire or a third rail; both are common. Yamaha 285pe inboard motor catalog electric cables : Elco offers a full line of outboard electric motors as well as electric inboard and hybrid systems. If someone trips and falls on an electric car's charging cable strewn across the pavement, who is liable? The Metal Clad Cable is an affordable and flexible option for a wide variety of electrical uses. They are available in a variety of variations, including GFCI and tamper-resistant. Locking connectors come in a variety of standardized configurations that follow the same general naming scheme except that the designations include an "L" for "locking". Referring to the picture, the orientation is the same as the NEMA 5 plug and receptacle, with the neutral blade on the lower right. Adapters are available with the TT-30P plug on one side and a 5-15R or 5-20R receptacle on the other side. Once pushed into the receptacle, the plug is twisted and its now-rotated blades latch into the receptacle.