How do you wire a 3 prong 240 volt spur to a 4 prong 240 volt receptacle?

Answer 1

Your L14-30 receptacle has four positions on it. It is rated as a 125/250 volt device. It is classed as three pole four wire grounding. Connect the ground wire to the "G" screw, white wire to the "W" screw. One of your hot wires (might be red) to the "X" screw and the other hot wire (might be black) to the "Y" screw. This connection gives you the potential of 240 volts between "X" and "Y" and 120 volt potential between "W" and "X" and 120 volt potential between "W" and "Y".

Answer 2

In wiring an L14-30 receptacle, the hooked prong is grounded (green or uninsulated grounding wire), the terminal opposite that one is "neutral" (white) and the other two are 240-v phase "hots".

You are responsible for verifying that this works for your particular appliance.

Note: in the 50R and 60R, the hooked connector is neutral and the center pin is grounded.


NEC Manual: Exhibit 406.3, ref ANSI C73, NEMA WD 6-1997.

Answer 3

Answer for USA, Canada and countries running a 60 Hz supply service.

0. Always shut off the circuit breaker and test the voltage of all wires with a voltmeter prior to beginning work.

1. attach the bare copper ground wire to the green screw, winding it clockwise.

2. Strip the black and white wire to the length shown on the "strip gauge" shown on the back of the outlet.

3. Insert the white wire into one of the holes marked "white or neutral" on the back of the outlet. This will be on the same side as the silver-colored screws.

4. Insert the black wire into one of the holes marked "hot wire". This will be on the same side as the brass-colored screws.

5. When folding all the wires back into the box, be sure that the bare "ground" wire is pushed in first, and that none of the wires stick out and contact the sides of the outlet.

6. Turn on the circuit breaker, and test your outlet with a voltmeter.

Note: the "black" wire will sometimes be red, or in some cases will be white with black paint on the end.

Note also: It is possible that there are other outlets on the same circuit that are wired through this outlet. In this case, there will be two each of white and black wires. In this case, connect both white wires and both black wires in the correct positions. (There should be two back-wire holes on each side of the back of the outlet).

As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

Answer 4

Wiring a duplex receptacle

Looking at the duplex receptacle from the front side directly on, you should see a larger blade hole (silver) on the left, smaller (brass) blade hole on the right and a U shaped ground blade on the bottom. The white wire connects under the left (silver) coloured screw, the black wire connects under the right (brass) coloured screw and the green wire under the green ground screw. Wiring a group of receptacles together requires them to be paralleled together. White to whites, black to blacks and ground wire to ground wires.

Answer 5

You will need 12-3 awg wire. The wire colors will be white, black and red. simply put, red on left, black on right and white on the center terminal. Hope this helps.

Mike

Answer 6

Ground connects to the green ground screw. White connects to the silver screw and black connects to the gold screw.

Answer 7

The receptacles will be wired in parallel with each other.

Answer 8

There are many three prong outlets. Need the amperage of the outlet to give the exact terminal letters.