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You will have to run new electrical wire or a single ground wire back to the panel (though the former is highly recommended). A GFCI outlet will cut off the circuit if it senses voltage leaking to ground. If there is no ground wire, it will not function.
Wiki User
∙ 14y ago
Wiki User
∙ 10y agoYou find out which of the two black wires was installed incorrectly without being taped or sleeved in white. Then you put the white sleeve or tape on and connect the black and white wires to the hot and neutral terminals of the GFI, respectively.
If you only have two black wires that are both "hot", such as in a single-pole light switch, you cannot install a GFCI there.
Anonymous
it will function
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Can you install a GFCI on a 2 wire circuit?
Yes, you install a GFCI on a 2 wire circuit.
How do you install a 20 amp switch for well pump?
Black/White/Ground power in and the same out. Tie the incoming and outgoing white wires together under a yellow wire nut and push them back in the box. Tie the ground wires together under a green wire nut and connect the pigtail from those ground wires to the ground screw on the switch. Connect the 2 black wires you have left to the 2 screws on the switch. Doesn't matter which black wire you connect to which screw.
How do you fix an electric baseboard heater?
first of all you buy a double pole unit thermostat which should come with the mounting plate and thermostat and it should have 4 wires 2 red 2 black okay now you join the red to the red power wire and black to the black power wire and the 2 remaining wires which should be a red and black can be joined to the red and black wires on your heater .....now you should be good to go ............LEE48
How do you connect wire to a breaker?
There is 220 volts between the two poles. If you are running 2 wires (black and white) + ground then you hook black to one pole and white to the other. Put red or black electric tape on each end of the white wire and wrap around wire for 3 inches or so next to the connection so the next person will be able to see that the wire is hot and not a neutral.
How do you wire a light to a switch at the end of a run and which controls an outlet?
Bring power into the light switch box 12/2 or 14/2 wire depending on the existing wire. Make sure you use the exactly same size wire that is used on that circuit. If you do not know look at the breaker in the main panel that controls power to that circuit. 20 amp will be 12/2 wire and 15 amp will be 14/2 wire. Now run another wire from the switch box out to the outlet. Inside the switch box, strip both white wires back 3/4" and connect them together under a wire nut and push this back into the box. Connect the 2 ground wires together and then connect that to the ground screw on the switch. You now have 2 black wires left. Connect them to the 2 screws on the light switch. Does not matter which black wire you connect to which screw. At the outlet connect the ground wire to the green ground screw, black wire to copper screw, and white wire to silver screw. That outlet will now be controlled by the light switch.
Can you install a GFCI on a 2 wire circuit?
Yes, you install a GFCI on a 2 wire circuit.
How do you wire 220V with 2 black 1 white wire?
Your black wires are your hot wires. The white is your neutral or common. It would be best to run an equipment ground (green wire) too.
What are 2 red and black wires in the trunk for?
My guess would be speaker wire.
Where does the red wire in a baseboard heater connect to the black or white wire in the wall?
In the heater you will have two wires. You should then have 2 supply wires from the panel, and 2 wires from the thermostat. The neutral (white) supply wire should go to one of the wires on the heater. The hot (black) supply wire should connect to one wire from the thermostat. The other wire from the thermostat will connect to the other wire from the heater.
How do you wire a ceiling light that doesnt have a black or white wire?
It will have 2 black or brown wires. Look very closely at the wires coming from the light. One of the wires will have ridges on it or may have a white line or some other method of identification. That wire is the neutral wire and connects to the white wire in the ceiling box. The smooth wire is the hot wire and connects to the black wire in the ceiling box.
How do you wire a 3-wire 240V 15A pump motor to a GFCI receptacle or GFCI breaker?
== == == == Don't know if there are any 240V GFCI receptacles so I vote for a 240V GFCI breaker which would be 2 pole. The pump should have two colored wires and a white. White goes to the neutral bus and the two colored wires go to the two poles of the breaker. 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 JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
How do you hook up new black white and green wires to 2 old white wires and 2 old black wires?
More information is needed as to what device you are connecting to what power supply. The only two identifiable wires are the white and green. In North America the white colour is used for the circuit's neutral and the green is used for grounding of devices.
New ceiling fixture goes on as soon as power is back even though switch is off?
You switched the power and switch wires. There should be two sets of wires in the ceiling box. 2 black, 2 white, 2 bare. Two groups of three. The white wire going to the light is the incoming wire. The black one in that group is the power coming in. Take that black wire and connect it to the other black wire. The second black wire goes to the switch. The power comes back to the light on the white wire of that set. Connect that white wire to the black wire in the fixture. The switch should work now. That is if everyone wired the house the way it is supposed to be.
How do you wire a two pole lamp holder with a pull chain when you have four wires coming out of the wall?
Assuming the wires are 2 blacks and 2 whites, and assuming one set provides power and the other set continues the circuit downline, you connect both black wires to the black wire of the lamp holder and connect both white wires to the white wire of the lamp holder. Turn the circuit off before making these connections.
How do you install a 20 amp switch for well pump?
Black/White/Ground power in and the same out. Tie the incoming and outgoing white wires together under a yellow wire nut and push them back in the box. Tie the ground wires together under a green wire nut and connect the pigtail from those ground wires to the ground screw on the switch. Connect the 2 black wires you have left to the 2 screws on the switch. Doesn't matter which black wire you connect to which screw.
How do you attach a 4 wire power cord to electric dryer?
in back of dryer u should have a block with three wires 2 blacks 1 green the one u are trying to wire up should have 2 black 1 green 1 white the white and green wire go in the midle post of the block on the dryer and the other 2 wires go to the out side posts of the block
How do you fix an electric baseboard heater?
first of all you buy a double pole unit thermostat which should come with the mounting plate and thermostat and it should have 4 wires 2 red 2 black okay now you join the red to the red power wire and black to the black power wire and the 2 remaining wires which should be a red and black can be joined to the red and black wires on your heater .....now you should be good to go ............LEE48
