Three phase systems - are there any single phase devices that are connected between two phases instead of between one phase and neutral?Unbalanced three phase system - Neutral fails/opens/disconnects - consequence?How is transition from three-phase distribution without neutral to three-phase consumption with neutral achieved?In a single-phase transformer output, which-wire would be phase, and which-one would be neutral?Effect of the neutral current to a system when a 3-phase facility is used as unbalancedGrounding of one pahse of a starpoint where the point is not groundedBasic 3 phase questionHow are the individual homes connected in a 3 phase power distribution system (power grid) so that they have correct voltage?kVA calculations3-phase 380 V to 3-phase 230 V3 Phase vs line to line
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Three phase systems - are there any single phase devices that are connected between two phases instead of between one phase and neutral?
Unbalanced three phase system - Neutral fails/opens/disconnects - consequence?How is transition from three-phase distribution without neutral to three-phase consumption with neutral achieved?In a single-phase transformer output, which-wire would be phase, and which-one would be neutral?Effect of the neutral current to a system when a 3-phase facility is used as unbalancedGrounding of one pahse of a starpoint where the point is not groundedBasic 3 phase questionHow are the individual homes connected in a 3 phase power distribution system (power grid) so that they have correct voltage?kVA calculations3-phase 380 V to 3-phase 230 V3 Phase vs line to line
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In star system, single phase consumers are connected between a line and neutral but are there any single phase devices connected between two phases (would that even be considered a single phase device?)?
ac three-phase
asked 8 hours ago
user3711671user3711671
225 bronze badges
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add a comment |
$begingroup$
In star system, single phase consumers are connected between a line and neutral but are there any single phase devices connected between two phases (would that even be considered a single phase device?)?
ac three-phase
asked 8 hours ago
user3711671user3711671
225 bronze badges
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1
$begingroup$
I believe there are some heaters, stoves, hotplates, etc that require 400V in Europe, but it's certainly unusual
$endgroup$
– michi7x7
6 hours ago
add a comment |
$begingroup$
In star system, single phase consumers are connected between a line and neutral but are there any single phase devices connected between two phases (would that even be considered a single phase device?)?
ac three-phase
asked 8 hours ago
user3711671user3711671
225 bronze badges
$endgroup$
In star system, single phase consumers are connected between a line and neutral but are there any single phase devices connected between two phases (would that even be considered a single phase device?)?
ac three-phase
ac three-phase
asked 8 hours ago
user3711671user3711671
225 bronze badges
asked 8 hours ago
user3711671user3711671
225 bronze badges
asked 8 hours ago
user3711671user3711671
225 bronze badges
asked 8 hours ago
user3711671user3711671
225 bronze badges
asked 8 hours ago
user3711671user3711671
225 bronze badges
225 bronze badges
1
$begingroup$
I believe there are some heaters, stoves, hotplates, etc that require 400V in Europe, but it's certainly unusual
$endgroup$
– michi7x7
6 hours ago
add a comment |
1
$begingroup$
I believe there are some heaters, stoves, hotplates, etc that require 400V in Europe, but it's certainly unusual
$endgroup$
– michi7x7
6 hours ago
1
1
$begingroup$
I believe there are some heaters, stoves, hotplates, etc that require 400V in Europe, but it's certainly unusual
$endgroup$
– michi7x7
6 hours ago
$begingroup$
I believe there are some heaters, stoves, hotplates, etc that require 400V in Europe, but it's certainly unusual
$endgroup$
– michi7x7
6 hours ago
add a comment |
4 Answers
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In the USA, some residential and commercial services are supplied with 120/208 volt service. The 120 V phase to neutral is used for standard wall receptacles and lighting. Phase to phase 208 V is used for single-phase kitchen stoves, water heaters, clothes dryers and motors in heating and air-conditioning units. Small single-phase motors are widely available for 208 volts.
In the rest of the world, where 220-230 V is supplied for wall outlets and lighting, the phase to phase voltage is 380-400 volts. Single-phase motors for that voltage level would be quite unusual. It seems unlikely that other loads would be served at that voltage, but it is certainly possible.
answered 7 hours ago
Charles CowieCharles Cowie
23.4k1 gold badge18 silver badges42 bronze badges
$endgroup$
add a comment |
$begingroup$
There are voltage testers, which determine the direction of rotation. They are connected to 2 of the 3 phases. ("Phase Sequence Test")
Something like this: https://www.benning.de/products-en/testing-measuring-and-safety-equipment/test-equipment-voltage-tester/duspol-voltage-testers.html
However, this is probably not what you consider a "device".
answered 8 hours ago
DanishDanish
214 bronze badges
New contributor
Danish is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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I have an old Oxford stick welder that can be run between phases or in phase to neutral mode, between phases (400V input tap) gives a better weld especially when the supply cables are a bit on the long side.
So, yea, kit designed for phase-phase exists, but I think the actual intended use in this case was to allow welding when a deta supply was all that was available.
answered 8 hours ago
Dan MillsDan Mills
12.8k1 gold badge14 silver badges26 bronze badges
$endgroup$
add a comment |
$begingroup$
Many condo buildings are served by a three phase 120/208 transformer. The lobby air conditioner would be 120/208 3phase and would need all three 120V legs. The condo units would have 120/208 1 phase and would need two 120 legs and a neutral. The single phase loads would need one of the two 120V legs and the neutral. The water heater would normally need just the two 120V legs for 208V and no neutral. The water heater is considered to be single phase but is connected to two phases. The ovens, air conditioners and stove tops, which are also considered single phase, would also need the two 120V legs but could also include a neutral if they needed 120V for a clock/timer, etc.
answered 7 hours ago
IamengineerIamengineer
312 bronze badges
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4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
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votes
active
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votes
$begingroup$
In the USA, some residential and commercial services are supplied with 120/208 volt service. The 120 V phase to neutral is used for standard wall receptacles and lighting. Phase to phase 208 V is used for single-phase kitchen stoves, water heaters, clothes dryers and motors in heating and air-conditioning units. Small single-phase motors are widely available for 208 volts.
In the rest of the world, where 220-230 V is supplied for wall outlets and lighting, the phase to phase voltage is 380-400 volts. Single-phase motors for that voltage level would be quite unusual. It seems unlikely that other loads would be served at that voltage, but it is certainly possible.
answered 7 hours ago
Charles CowieCharles Cowie
23.4k1 gold badge18 silver badges42 bronze badges
$endgroup$
add a comment |
$begingroup$
In the USA, some residential and commercial services are supplied with 120/208 volt service. The 120 V phase to neutral is used for standard wall receptacles and lighting. Phase to phase 208 V is used for single-phase kitchen stoves, water heaters, clothes dryers and motors in heating and air-conditioning units. Small single-phase motors are widely available for 208 volts.
In the rest of the world, where 220-230 V is supplied for wall outlets and lighting, the phase to phase voltage is 380-400 volts. Single-phase motors for that voltage level would be quite unusual. It seems unlikely that other loads would be served at that voltage, but it is certainly possible.
answered 7 hours ago
Charles CowieCharles Cowie
23.4k1 gold badge18 silver badges42 bronze badges
$endgroup$
add a comment |
$begingroup$
In the USA, some residential and commercial services are supplied with 120/208 volt service. The 120 V phase to neutral is used for standard wall receptacles and lighting. Phase to phase 208 V is used for single-phase kitchen stoves, water heaters, clothes dryers and motors in heating and air-conditioning units. Small single-phase motors are widely available for 208 volts.
In the rest of the world, where 220-230 V is supplied for wall outlets and lighting, the phase to phase voltage is 380-400 volts. Single-phase motors for that voltage level would be quite unusual. It seems unlikely that other loads would be served at that voltage, but it is certainly possible.
answered 7 hours ago
Charles CowieCharles Cowie
23.4k1 gold badge18 silver badges42 bronze badges
$endgroup$
In the USA, some residential and commercial services are supplied with 120/208 volt service. The 120 V phase to neutral is used for standard wall receptacles and lighting. Phase to phase 208 V is used for single-phase kitchen stoves, water heaters, clothes dryers and motors in heating and air-conditioning units. Small single-phase motors are widely available for 208 volts.
In the rest of the world, where 220-230 V is supplied for wall outlets and lighting, the phase to phase voltage is 380-400 volts. Single-phase motors for that voltage level would be quite unusual. It seems unlikely that other loads would be served at that voltage, but it is certainly possible.
answered 7 hours ago
Charles CowieCharles Cowie
23.4k1 gold badge18 silver badges42 bronze badges
answered 7 hours ago
Charles CowieCharles Cowie
23.4k1 gold badge18 silver badges42 bronze badges
answered 7 hours ago
Charles CowieCharles Cowie
23.4k1 gold badge18 silver badges42 bronze badges
answered 7 hours ago
Charles CowieCharles Cowie
23.4k1 gold badge18 silver badges42 bronze badges
23.4k1 gold badge18 silver badges42 bronze badges
add a comment |
add a comment |
$begingroup$
There are voltage testers, which determine the direction of rotation. They are connected to 2 of the 3 phases. ("Phase Sequence Test")
Something like this: https://www.benning.de/products-en/testing-measuring-and-safety-equipment/test-equipment-voltage-tester/duspol-voltage-testers.html
However, this is probably not what you consider a "device".
answered 8 hours ago
DanishDanish
214 bronze badges
New contributor
Danish is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
There are voltage testers, which determine the direction of rotation. They are connected to 2 of the 3 phases. ("Phase Sequence Test")
Something like this: https://www.benning.de/products-en/testing-measuring-and-safety-equipment/test-equipment-voltage-tester/duspol-voltage-testers.html
However, this is probably not what you consider a "device".
answered 8 hours ago
DanishDanish
214 bronze badges
New contributor
Danish is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
There are voltage testers, which determine the direction of rotation. They are connected to 2 of the 3 phases. ("Phase Sequence Test")
Something like this: https://www.benning.de/products-en/testing-measuring-and-safety-equipment/test-equipment-voltage-tester/duspol-voltage-testers.html
However, this is probably not what you consider a "device".
answered 8 hours ago
DanishDanish
214 bronze badges
New contributor
Danish is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
There are voltage testers, which determine the direction of rotation. They are connected to 2 of the 3 phases. ("Phase Sequence Test")
Something like this: https://www.benning.de/products-en/testing-measuring-and-safety-equipment/test-equipment-voltage-tester/duspol-voltage-testers.html
However, this is probably not what you consider a "device".
answered 8 hours ago
DanishDanish
214 bronze badges
New contributor
Danish is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 8 hours ago
DanishDanish
214 bronze badges
New contributor
Danish is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 8 hours ago
DanishDanish
214 bronze badges
answered 8 hours ago
DanishDanish
214 bronze badges
214 bronze badges
New contributor
Danish is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Danish is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
$begingroup$
I have an old Oxford stick welder that can be run between phases or in phase to neutral mode, between phases (400V input tap) gives a better weld especially when the supply cables are a bit on the long side.
So, yea, kit designed for phase-phase exists, but I think the actual intended use in this case was to allow welding when a deta supply was all that was available.
answered 8 hours ago
Dan MillsDan Mills
12.8k1 gold badge14 silver badges26 bronze badges
$endgroup$
add a comment |
$begingroup$
I have an old Oxford stick welder that can be run between phases or in phase to neutral mode, between phases (400V input tap) gives a better weld especially when the supply cables are a bit on the long side.
So, yea, kit designed for phase-phase exists, but I think the actual intended use in this case was to allow welding when a deta supply was all that was available.
answered 8 hours ago
Dan MillsDan Mills
12.8k1 gold badge14 silver badges26 bronze badges
$endgroup$
add a comment |
$begingroup$
I have an old Oxford stick welder that can be run between phases or in phase to neutral mode, between phases (400V input tap) gives a better weld especially when the supply cables are a bit on the long side.
So, yea, kit designed for phase-phase exists, but I think the actual intended use in this case was to allow welding when a deta supply was all that was available.
answered 8 hours ago
Dan MillsDan Mills
12.8k1 gold badge14 silver badges26 bronze badges
$endgroup$
I have an old Oxford stick welder that can be run between phases or in phase to neutral mode, between phases (400V input tap) gives a better weld especially when the supply cables are a bit on the long side.
So, yea, kit designed for phase-phase exists, but I think the actual intended use in this case was to allow welding when a deta supply was all that was available.
answered 8 hours ago
Dan MillsDan Mills
12.8k1 gold badge14 silver badges26 bronze badges
answered 8 hours ago
Dan MillsDan Mills
12.8k1 gold badge14 silver badges26 bronze badges
answered 8 hours ago
Dan MillsDan Mills
12.8k1 gold badge14 silver badges26 bronze badges
answered 8 hours ago
Dan MillsDan Mills
12.8k1 gold badge14 silver badges26 bronze badges
12.8k1 gold badge14 silver badges26 bronze badges
add a comment |
add a comment |
$begingroup$
Many condo buildings are served by a three phase 120/208 transformer. The lobby air conditioner would be 120/208 3phase and would need all three 120V legs. The condo units would have 120/208 1 phase and would need two 120 legs and a neutral. The single phase loads would need one of the two 120V legs and the neutral. The water heater would normally need just the two 120V legs for 208V and no neutral. The water heater is considered to be single phase but is connected to two phases. The ovens, air conditioners and stove tops, which are also considered single phase, would also need the two 120V legs but could also include a neutral if they needed 120V for a clock/timer, etc.
answered 7 hours ago
IamengineerIamengineer
312 bronze badges
$endgroup$
add a comment |
$begingroup$
Many condo buildings are served by a three phase 120/208 transformer. The lobby air conditioner would be 120/208 3phase and would need all three 120V legs. The condo units would have 120/208 1 phase and would need two 120 legs and a neutral. The single phase loads would need one of the two 120V legs and the neutral. The water heater would normally need just the two 120V legs for 208V and no neutral. The water heater is considered to be single phase but is connected to two phases. The ovens, air conditioners and stove tops, which are also considered single phase, would also need the two 120V legs but could also include a neutral if they needed 120V for a clock/timer, etc.
answered 7 hours ago
IamengineerIamengineer
312 bronze badges
$endgroup$
add a comment |
$begingroup$
Many condo buildings are served by a three phase 120/208 transformer. The lobby air conditioner would be 120/208 3phase and would need all three 120V legs. The condo units would have 120/208 1 phase and would need two 120 legs and a neutral. The single phase loads would need one of the two 120V legs and the neutral. The water heater would normally need just the two 120V legs for 208V and no neutral. The water heater is considered to be single phase but is connected to two phases. The ovens, air conditioners and stove tops, which are also considered single phase, would also need the two 120V legs but could also include a neutral if they needed 120V for a clock/timer, etc.
answered 7 hours ago
IamengineerIamengineer
312 bronze badges
$endgroup$
Many condo buildings are served by a three phase 120/208 transformer. The lobby air conditioner would be 120/208 3phase and would need all three 120V legs. The condo units would have 120/208 1 phase and would need two 120 legs and a neutral. The single phase loads would need one of the two 120V legs and the neutral. The water heater would normally need just the two 120V legs for 208V and no neutral. The water heater is considered to be single phase but is connected to two phases. The ovens, air conditioners and stove tops, which are also considered single phase, would also need the two 120V legs but could also include a neutral if they needed 120V for a clock/timer, etc.
answered 7 hours ago
IamengineerIamengineer
312 bronze badges
answered 7 hours ago
IamengineerIamengineer
312 bronze badges
answered 7 hours ago
IamengineerIamengineer
312 bronze badges
answered 7 hours ago
IamengineerIamengineer
312 bronze badges
312 bronze badges
add a comment |
add a comment |
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I believe there are some heaters, stoves, hotplates, etc that require 400V in Europe, but it's certainly unusual
$endgroup$
– michi7x7
6 hours ago