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Electrical Wire and Cable


Grounding an Electrical Panel

How to Ground a Electric Circuit Breaker Panel: Grounding Requirements for Electric Panels, National Electrical Code, NEC Article 250, Grounding a Main Panel, Grounding a Sub-Panel, Electrical Grounding Methods.

 

Guide to Grounding Requirements for Electric Panels
Electrical Question: How do I ground a breaker panel to the ground bar.

Thank You.

This electrical wiring question came from: hector, a Handyman from St. Cloud, Florida.

Additional Comments: Its a very helpful site.

Dave’s Reply:
Thanks for your electrical wiring question Hector.

How to Ground a Electric Circuit Breaker Panel

home-electrical-codes-for-grounding

Skill Level: Advanced – Licensed Electrical Contractor, Not Recommended for Homeowners.
Tools Required: Electricians Pouch of Hand Tools.
Estimated Time: Depends on the extent of the project, the panel make and model, and the grounding method to be used.
Precaution: If the only ground source for the electrical system will be removed or modified then the electrical service should be shut off until the new ground source can be reconnected.
Notice: Making changes to the Electrical Service Panel should be done with a permit and be inspected.

Grounding Requirements for Electric Panels

PLEASE NOTE: This question did not state if the GE 125 amp panel is a main panel or a sub panel, which makes a very big difference with the grounding method as outlined below:

Electrical Grounding Methods

More about Electrical Grounding Methods

Electrical Panel Circuit Listing

Electric panel
home-electrical-circuits
House Wiring Circuits and Circuit Breakers
This article looks at common 120 volt and 240 volt house wiring circuits and the circuit breakers that are installed identifying the types and amperage sizes used in most homes.

For more information about Grounding

Electrical Codes
Electrical Codes for Grounding

Electrical Grounding Methods and Requirements
Electrical Grounding Methods and Requirements
Listing of electrical codes for grounding with examples of electrical grounding codes for home electrical wiring.


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NEC Codes for Home Electrical Wiring
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Be Careful and Be Safe - Never Work on Energized Circuits!
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Electrical Tips to Help You Wire it Right

The Safest Way to Test Electrical Devices and Identify Electric Wires!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.

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The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
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FAQs Frequently Asked Questions and Comments

2 Responses to “Grounding an Electrical Panel”
  1. William Schymick says:

    I have installed a 125 amp sub-panel, serviced with #2 stranded copper. I have a grounding rod implanted for use as a supplemental exterior ground.

    1. Can I use left over #2 insulated stranded wire for this ground? or, must it be exposed solid copper? (# 4 or #6)
    2. Can the ground wire be spliced?
    3. Can I attach other ground wires to the grounding rod, or must it be used only for the sub-panel?
    Thanks,
    BS

    • Dave Rongey says:

      Hi William,
      Please refer to the Electrical Code section of this website for sizing your sub panel ground wire.
      A ground wire may not be spliced, but must be continuous.
      Attaching other wires to the ground rod would depend on what the system may be and how it is connected.
      I hope this helps,
      Dave

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