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What size wire do you need for a 200 Amp 240 Volt 3 phase 4 wire service on a doctors office?
Wiki User
∙ 11y ago
You might be out of luck. Three phase delta 240 volt services are a thing of the past. As far as I know there never was a 240 volt three phase four wire. The line to neutral voltage would be 240/1.73 = 139 volts which is of no use to anyone.
Three phase four wire system for business and commercial use these days is 120/208 volts.
A 3/0 copper conductor with an insulation factor of 90 degrees C is rated at 225 amps.
Wiki User
∙ 11y ago
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What color is in a 480 volt three phase service?
brown blue yallow
How do you obtain a 230 volts single phase supply from a 400 volts three phase four wire supply?
400 volt three phase on a grounded system is 230 volt single phase, with each phase 120 degrees apart. So, if you have a 400 volt, three phase four wire service (grounded service), you can pull one phase off and reference to the neutral for 230 volt service. Note this may not allow 115 volt service, unless there is also a center tap for each phase.
What is the minimum volt rating of wire used in a 3 phase 4160 volt phase to phase system?
5000 volt
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.
You are measuring 480 volt from phase to phase and 280 volt phase to ground but one leg measures 440 volt phase to ground why?
Check for a blown fuse in one of the phase legs.
Can you replace 240 volt service with 480 volt service?
240 volt service is residential, split single phase. 480 volt service is commercial/industrial, three phase. In theory, with the approval of your municipality and electric utility, you could replace split single phase with commercial three phase service. However, the equipment for the replacement (transformers, feeder wire) would likely not be provided by the electric utility and would have to be bought by you. This equipment cost usually makes any benefit of such equipment not cost effective. Not to mention the cost doesn't end there. Your building electrical system would have to be rebuilt as a three phase system. That is like apples and oranges. You wouldn't even be able to plug in a typical 120v load without connecting transformers to step down the voltage.
Can you wire up a 240 volt single phase water heater to 277 volt single phase?
no
In a 240 volt single phase circuit A phase is 4000 watts B phase is 7000 watts what is the neutral load?
Question is incorrect. in a 240 Volt single phase circuit, how can you have A phase and B phase?
How is electrical energy delivered to the end users?
End users generally subscribe to an electrical service according to their power needs. A residential home, for instance, might have a three-wire, 220-volt, single-phase service rated at between 60 and 200 amps, to a service panel supplying 110-volt and 220-volt branch circuits. A commercial end-user may need three-phase 277/480-volt system supplied on 4 wires, rated for 800 amps overhead or more underground.
How do you get a 380 volt 3 phase motor to run on a 220 volt 3 phase power source?
Use a transformer.
How do you change a 3 phase 440 volt motor to a 3 phase 220 volt motor?
You can not change it. 440 volt is by design. However you run it with 220 single phase supply, but it would run far lower power.
Can you run a 570 volt motor on 480 volt three phase power supply?
No, the voltage difference is too much. A 570 volt motor falls in the 600 volt range which is separate from the 480 volt range of three phase systems.
