Nema 6-50P plugs connect appliances to 250-volt 50-amp electrical circuits, and they use cable with 8-gauge wire or larger. The face of the plug has two straight prongs, one of which is roughly half the size of the other, with the larger prong on the right, and a semi-circle-shaped ground prong positioned above and between the other two. The plug usually has a circular or square face roughly two inches across, and it is used on appliances such as electric welders.
Things You'll Need
- Utility knife
- Wire strippers
Cut off two inches of outer sheathing from the end of the power cord using a utility knife. Remove 1/2 an inch of plastic coating from the ends of the two wires inside, using wire strippers or the utility knife. The cable has a third bare ground wire, or it may be coated with green plastic.
Open the cover on the back of the plug by taking out its screws. Loosen each of the terminal screws inside the plug casing. Loosen the screws holding the clamps together on the plug's handle. Slip the wires between the clamps and push them through.
Push the end of the bare ground wire into the ground terminal and tighten its green screw to the wire. Push the black wire into the terminal connected to the small prong. Tighten the terminal screw to the wire. Insert the remaining wire into the other terminal connected to the larger prong. Tighten its screw to the wire.
Push the cover in position onto the back of the plug and install the screws. Tighten the clamp screws.
How to Straight Wire a Cooling Fan to an Engine
Electric engine cooling fans are used to help remove the excess heat produced by the engine during the combustion process. This heat...
How to Wire a NEMA 6-50 Plug
A NEMA 6-50 plug has two straight hot prongs, running parallel to each other, and a horseshoe-shaped ground prong. The hot prongs...
How to Wire a Nema L14-20P Plug
One of the receptacles many industrial-size generators have requires a NEMA L14-20P, a three-pole four-wire plug. The L14-20P plugs into a NEMA...
How to Wire a NEMA 6-15 Plug
A NEMA 6-15 plug has two horizontally-aligned straight-blade prongs and one horseshoe-shaped prong. A 6-15 plug's prong shape and spacing only fits...
How to Wire a 250V Plug
Clothes dryers, electric ranges and other major appliances all require 250-volt plugs in order to function. Most of these plugs come already...