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You can't. The 120 volt GFCI is probably just a 2-wire (hot, neutral and ground) You would have to run a new 3-wire (2 hots, neutral and ground). The two hots are how you get the 240 volts (120+120=240). Also you must make sure the wire is gauged properly. #10 wire for 30 amps, #12 wire for 20 amps, etc.
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoYes, GFCIs can be installed on 240 volt circuit. GFCIs protect against electric shocks from ground faults. They trip the circuit if the current is more than a certain level.
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Will GFCI work properly if 240 volt split into one 3 wire 120 volt circuit?
yes
What type of gfci outlet is best for 1600 watts?
A load of 1600 watts should be placed on a 20 amp 120 volt GFCI outlet.
Can you use 240 volts with a 120 volt supply?
Only if the cable going to your well pump is a three wire. The third wire could carry the neutral and you will have 120 volts from either 240 leg to the neutral.
Can you wire a 120 volt ballast to a 347 volt circuit?
No, not a good idea. You have to use a 347 volt ballast.
What is the ac voltage reading between the bare copper wire and the hot black wire 120 vac or zero volt?
Should be about 120 VAC.
Will GFCI work properly if 240 volt split into one 3 wire 120 volt circuit?
yes
What type of gfci outlet is best for 1600 watts?
A load of 1600 watts should be placed on a 20 amp 120 volt GFCI outlet.
Does 240 volt have a neutral wire?
Yes <<>> In North America, a three wire 120/240 volt system uses a neutral wire. For 240 volts two "hot" wires are used with no neutral.
A three-wire installation provides a power source for?
Answer for USA, Canada and countries running a 60 Hz supply service.A three wire installation provides a power source for independent 120 volt circuits and 240 volt circuit with neutral.A common 120/240 volt 200 amp distribution service panel can have 42 circuits supplied from it. These circuits can be in any number of different combinations of 120 volts or 240 volts.
Can you use 240 volts with a 120 volt supply?
Only if the cable going to your well pump is a three wire. The third wire could carry the neutral and you will have 120 volts from either 240 leg to the neutral.
Can you wire a 120 volt 7 amp Jacuzzi motor to a wall outlet in my bathroom?
No, it must be on a dedicated circuit of it's own. It must be on AWG 12/2 wire with 20 amp breaker. It also must be protected with a GFCI outlet.
Can you wire a 347 volt ballast to a 120 volt fixture?
Yes, but it will not work.
Can you wire a 120 volt ballast to a 347 volt circuit?
No, not a good idea. You have to use a 347 volt ballast.
Which color wire is normally hot on a 120 volt system?
black
How can you get a 240V single-phase power from a 120V 3-phase service?
First of all there is no common three phase 120 volt service. There is in North America a three wire 120/240 volt single phase service. That being said, if you want to change a 120 volt source to 240 volts it must be done with a transformer. Its classification is a step up transformer. The primary side of the transformer H1 - H2 will be connected to the 120 volts. The secondary side of the transformer X1 - X2 will be connected to the 240 volt load. The transformer is sized by the current required by the 240 volt load.
Can you wire usa 4 wire 240 volt to UK 3 wire 240volt American boat in UK waters?
A four wire plug suggests to me that it is for split voltages. 120/240, hot - neutral - hot - ground will be the four blade connections for shore power in the US. With UK shore power three wire there will be no neutral as you know it. 120 volt equipment will not work. If there is a special berth for 120/240 shore power that is what you will need to tie up to.
What is the ac voltage reading between the bare copper wire and the hot black wire 120 vac or zero volt?
Should be about 120 VAC.
