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Electrical Question about the PE or Protective Earth Connection


By Dave Rongey - Summary:

Electrical Question about 3-Phase 220 Volt Wiring: The circuit is 220 volt, 3 phase, 60 cycles. The terminal landings are marked L1, L2, L3 and PE.

Electrical Question from Joe about 3-Phase 220 Volt Wiring Diagram

Electrical Question: Is the PE symbol the Earth Ground for an electrical power supply from another country?

Background: Joe, a Electrician from Seattle, Washington.
See more about Home Wiring for Washington

Dave the Electrician’s Reply:
Thanks for your electrical question Joe.

Electrical Terminal Landing for the PE Wire Conductor

Application: Installing a 220Volt Circuit.
Skill Level: Intermediate to Advanced, Best installed by a Licensed Electrical Contractor. Work in electrical panels is not recommended for homeowners, non-experienced individuals or non-electricians.
Tools Required: Basic Electricians Pouch Hand Tools, electric drill, auger bits and extension cord.
Estimated Time: Depends on personal level experience, ability to work with tools and install 220 volt electrical circuit wiring.
Precaution: Identify the main circuit of the panel, turn it OFF and Tag it with a Note before working with the wiring or installing the 220 volt wiring and circuit breaker. Working in an electric panel is dangerous due to arc flash hazards and the possibility of electric shock.
Notice: Installing an additional 220 volt circuit should be done according to local and national electrical codes with a permit and be inspected.

Wiring Connections to L1, L2, L3 and PE Terminal Blocks

More about 220Volt Electrical Wiring

220 Volt Wiring Diagram
220 Volt Wiring Diagram

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