How To Get 277V From 480V. Leg to leg gives you 480v. there is no neutral pulled so the electrician wants to wire a 277v 4.5kw resistive load (electric heater) from hot. on a 480y/277v system (not 277y/480v, per ieee definitions), you can have 480v single phase and 480v three. thanks for the replies, so i can go from a ungrounded three phase 480v with no neutral thru a transfomer and get 277v. There's more to it than divide by root 3. I know i can get 277vac by going from one. if you are dealing with a 277 volt circuit, you are coming out of a 480 volt three phase panel. the voltage between any two line conductors is typically 208 volts, 240 volts, or 480 volts. in a 277/480 transformer, each leg to ground measures 277v. However, 277 volts is commonly used as the standard voltage. have an application that requires 277vac, but only have 480vac.
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Leg to leg gives you 480v. there is no neutral pulled so the electrician wants to wire a 277v 4.5kw resistive load (electric heater) from hot. in a 277/480 transformer, each leg to ground measures 277v. if you are dealing with a 277 volt circuit, you are coming out of a 480 volt three phase panel. There's more to it than divide by root 3. thanks for the replies, so i can go from a ungrounded three phase 480v with no neutral thru a transfomer and get 277v. have an application that requires 277vac, but only have 480vac. on a 480y/277v system (not 277y/480v, per ieee definitions), you can have 480v single phase and 480v three. I know i can get 277vac by going from one. the voltage between any two line conductors is typically 208 volts, 240 volts, or 480 volts.
Larson Electronics 1 kVA Isolation Transformer 480V AC Primary
How To Get 277V From 480V the voltage between any two line conductors is typically 208 volts, 240 volts, or 480 volts. if you are dealing with a 277 volt circuit, you are coming out of a 480 volt three phase panel. on a 480y/277v system (not 277y/480v, per ieee definitions), you can have 480v single phase and 480v three. There's more to it than divide by root 3. Leg to leg gives you 480v. thanks for the replies, so i can go from a ungrounded three phase 480v with no neutral thru a transfomer and get 277v. I know i can get 277vac by going from one. the voltage between any two line conductors is typically 208 volts, 240 volts, or 480 volts. there is no neutral pulled so the electrician wants to wire a 277v 4.5kw resistive load (electric heater) from hot. However, 277 volts is commonly used as the standard voltage. in a 277/480 transformer, each leg to ground measures 277v. have an application that requires 277vac, but only have 480vac.
