answersLogoWhite

0

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

A line voltage thermostat for 240 volt control should be a two pole device. Code states that both of the "hot" wires must be broken when shutting the load off. By just shutting one leg off, the load device still has a 120 volt potential to ground through the unswitched leg. This is an unsafe condition. If any work has to be done on the load device and with the thermostat seen to be in the off position, a presumption is made that there is no voltage at the device. Best scenario turn the breaker off when working on any 240 circuits, don't depend on disconnecting devices within the circuit.

User Avatar

Wiki User

15y ago

What else can I help you with?

Continue Learning about Natural Sciences

Will splicing a 3 wire 240 volt compressor with a 4 wire 240 volt male end damage compressor motor?

It could if you don't get the terminals and motor wires on the correct terminals.


Can you use 600 volt wire for 240 volt appliance?

It depends on the voltage, but if you are using it on a 240 v system, it's quite OK to use wire that can take 600 v (if you had to buy the wire, you would be spending too much).


How do you wire a 120 volt gfci into a 240 volt three wire?

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.


240 volt what is loop is it neutral?

A 240-volt circuit typically consists of two hot wires and a ground wire, with no neutral wire. The hot wires each carry 120 volts, while the ground wire is used for safety purposes. In a 240-volt circuit, the hot wires complete a loop by connecting to a load or device that requires the higher voltage to operate.


Why doesn't my 240 volt wall heater have a common or a ground wire?

Your 240-volt wall heater typically doesn’t have a common or ground wire because it operates on a two-wire system, using two hot wires for the 240-volt supply. In this configuration, there is no need for a neutral wire (common) since the heater is designed to use both hot wires to function. Additionally, many 240-volt appliances are double-insulated, which reduces the need for a grounding wire. However, if local codes require grounding, you may need to ensure that the installation complies with safety standards.

Related Questions

Is a 220 volt electrical power wire the same as a 240 volt electrical power wire?

Yes 220 & 240 are considered the same.


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.


Can you wire a 240 volt window ac from a 277 volt feed?

no


What wire size should be used for a 30 amp 240 volt circuit?

For a 30 amp 240 volt circuit, a wire size of 10 AWG should be used.


What is the appropriate wire size for a 240 volt 40 amp circuit?

For a 240 volt 40 amp circuit, the appropriate wire size is typically 8 AWG (American Wire Gauge) for copper conductors.


Will splicing a 3 wire 240 volt compressor with a 4 wire 240 volt male end damage compressor motor?

It could if you don't get the terminals and motor wires on the correct terminals.


Can you wire up a 240 volt single phase water heater to 277 volt single phase?

no


Can you use 600 volt wire for 240 volt appliance?

It depends on the voltage, but if you are using it on a 240 v system, it's quite OK to use wire that can take 600 v (if you had to buy the wire, you would be spending too much).


What wire size should be used for a 40 amp 240 volt circuit?

For a 40 amp 240 volt circuit, a wire size of at least 8 AWG (American Wire Gauge) should be used to ensure safety and proper functioning of the circuit.


How do you wire a 120 volt gfci into a 240 volt three wire?

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.


Why use 3 wire 240 volt receptacle instead of a 4 wire 240 volt receptacle?

Use the 4 wire if possible. You would only use a 3 wire for an old appliance.You shouldn't if possible. The 3 wire has no neutral wire as the 4 wire does. Som applications require the use of a 3 wire and some don't.


240 volt what is loop is it neutral?

A 240-volt circuit typically consists of two hot wires and a ground wire, with no neutral wire. The hot wires each carry 120 volts, while the ground wire is used for safety purposes. In a 240-volt circuit, the hot wires complete a loop by connecting to a load or device that requires the higher voltage to operate.