What Is a High Leg Panel?
High-leg delta (also known as wild-leg, stinger leg, bastard leg, high-leg, orange-leg, or red-leg delta) is a type of electrical service connection for three-phase electric power installations. The three-phase power is connected in the delta configuration, and the center point of one phase is grounded.

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Consequently, what is a high leg used for?

It is commonly used to provide two 120V AC and one 208V AC circuit with reference to neutral although other voltages are possible depending on the phase to phase voltage on the secondary windings.

One may also ask, does 120 208 volt three phase have a high leg? Three Phase Four Wire Delta Also known as a high-leg or wild-leg delta system. Used in older manufacturing facilities with mostly three-phase motor loads and some 120 volt single-phase lighting and plug loads. Phase B, the high or wild leg, is not used as the voltage to neutral is 208 volt.

Subsequently, question is, what phase is the high leg supposed to be?

General Notes. The high-leg or phase with the higher voltage as measured to neutral has traditionally been designated “Phase B”. A change to the 2008 NEC now allows the high leg of a four-wire three-phase delta service to be labeled as the “C” phase instead of the “B” phase.

What does 415v mean?

Three-phase electric power is a common method of alternating current electric power generation, transmission, and distribution. It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads.

Related Question Answers

Does all 3 phase have a high leg?

One is by a 3-phase transformer (or three single-phase transformers), having four wires coming out of the secondary, the three phases, plus a neutral connected as a center-tap on one of the windings. These connections do not supply split single-phase power, and do not have a high leg.

What voltage is one leg of 480?

The voltage between any one leg and ground will be 277 volts, and between any 2 hot wires will be 480 volts.
Sarah Jenkins

Sarah Jenkins

Senior Technology Editor & AI Specialist

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.