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Easy answer, you can't.
Difficult answer, most devices may tolerate a 10% deviation in supply, but some cannot. A 277 Volt ac panel is used primarily for fluorescent lighting, I would not even attempt to use it for anything else.
277 volts is the star point voltage of a three phase 480 volt system. This voltage is too high to try and connect any 240 volt device to it.
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 REALLY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoYes you can, remember that AC voltage can be added or substracted just like the battery provided the polarity is taken care off. The difference is 277-240=37V so you need a step down transformer from 240V to 37V first and add this secondary voltage to mains 240V in series in right polority you can get 277V (or 203V if reverse), but the power will be limited to size of the transformer in use. If the transformer secondary can carry 5A current, you can draw up 1 KW power without over heating.
Wiki User
∙ 14y agoAnswer for USA, Canada and countries running a 60 Hz power supply service. The proper terminology for bus bars in an electrical panel are L1,L2,N. N is for neutral and it is this wire that is grounded. The voltage measurement from the L1 to N will give you 120 volts. Also from L2 to N will give you 120 volts and from L1 to L2 will give you 240 volts. Single pole breakers in the panel board starting at the top, alternate between L1 and L2 all the way down to the bottom. These breakers all have 120 volt outputs. If you plug a 2 pole breaker into two slots then you get 240 outputs because L1 and L2 are adjacent to one another.
Wiki User
∙ 14y agoYou don't. 277 volts is the star point (wye) voltage of a 480 volt three phase system. Unless the ballast for this type of lighting is multi tapped it can only be used for a 277 voltage supply. A multi tapped ballast on the other hand can be connected to the following voltages, 120, 208, 240, 277, 347, 480 and 600 volts.
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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 use 240 volt 3 phase to run a machine that is 240 volt single phase?
Yes, if the motor is rated 240 volts 3 phase.There is such a thing as 240 volt 3 phase power.However if you are asking if you can use 240 volts single phase on a three phase motor, then the answer is no.
Can 240 volt appliances from NZ run on 240 Volts in the US?
yes 240volts is 240 volts
If there are a red wire a black wire and a bare wire in a 120 volt supply wire which is the hot wire?
Where there is a red wire involved that usually indicates some type of special switching arrangement or more likely a 240 Volt circuit. In this case there will be 240 volts across the red and black and they will both be hot. Normally for 120 Volts the black is hot, the white is common and the bare wire is ground.
How do you change a 220 240 volt wire to a 110 120 volt wire?
Wire is wire - is doesn't matter what voltage you use. However, if you are changing the voltage on a device from 240 to 120, given the same power requirement, you may need bigger wires for the doubled current (and increased heat of resistivity).
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.
How can 240 vOLTS power a 277 vOLT light?
Slightly dimmly
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 use 240 volt 3 phase to run a machine that is 240 volt single phase?
Yes, if the motor is rated 240 volts 3 phase.There is such a thing as 240 volt 3 phase power.However if you are asking if you can use 240 volts single phase on a three phase motor, then the answer is no.
Can 240 volt appliances from NZ run on 240 Volts in the US?
yes 240volts is 240 volts
If there are a red wire a black wire and a bare wire in a 120 volt supply wire which is the hot wire?
Where there is a red wire involved that usually indicates some type of special switching arrangement or more likely a 240 Volt circuit. In this case there will be 240 volts across the red and black and they will both be hot. Normally for 120 Volts the black is hot, the white is common and the bare wire is ground.
How do you change a 220 240 volt wire to a 110 120 volt wire?
Wire is wire - is doesn't matter what voltage you use. However, if you are changing the voltage on a device from 240 to 120, given the same power requirement, you may need bigger wires for the doubled current (and increased heat of resistivity).
How many volts can b drawn off a 240 volt breaker?
240 volts maximum.
Can a 10-2 wire be connected to a 10-3 recepticle for a dryer?
No, the dryer needs 120 volts supplied by the neutral third wire, along with the 240 volts for the dryer element. One of the two 240 volt supply conductors is used with the neutral to supply 120 volts to the controls and the drum motor. That is why a three wire cable is needed.
What size wire do you need for a 200 Amp 240 Volt 3 phase 4 wire service on a doctors office?
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.
Can a 125 volt cable power a 120 volt piece of equipment?
The first thing we have to do is clarify the question. A cable rating of 125 volts is an insulation rating of the wire. Like wire with ratings of 300 volts, 600 volts and 1000 volts these are the highest allowable voltages that can be applied. A wire that is rated for 300 volts is good for 120 volts, 240 volts and 277 volts. At test research facilities, equipment is tested to destruction. The label that is given to wire as a result of the tests is the highest safest voltages that can be applied to that particular wire. So when you see a wire that has a label stating that it is rated for 300 volts it means that any voltage under and up to 300 volts is safe to apply. So to answer the question yes, the 125 volt insulation rating on the cable can be used to supply a source of 120 volts to a 120 volt rated piece of equipment.
What the difference between a 120 volt and a 240 volt waffle iron?
One has an element designed to work on 120 volts, the other has an element designed to work on 240 volts.
