Adding an Electric Panel and Circuits


By Dave Rongey - Summary:

Should I add a sub panel to get more electrical circuits? Installing a New Panel for More Electrical Circuits, Why Sub Panels Require a 3-Wire Cable with a Ground Wire, 4- Wire Panels with Neutral and Ground Isolation.


Installing a Panel for More Electrical Circuits

Electrical Question: Should I add a sub panel to get more electrical circuits?

Thanks J.R.

This electrical wiring question came from: Jim, a Contractor from Newburyport, Massachusetts.

Additional Comments: This is a spectacular site, I have been telling many others about it.
Thank You J.R. – Good to see you here again!

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

How to Wire a Sub Panel

Application: Installing a New Panel, Ground and Neutral Terminal Strips for Sub Panels.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrician.
Tools Required: Electricians pouch of hand tools and the various power tools necessary for installing the sub-panel.
Estimated Time: Depends on the type and size of the panel and available access to the project area.
Notice: Installing additional electrical wiring and a sub-panel should be done according to local and national electrical codes with a permit and be inspected.

How to Install a New Panel for More Electrical Circuits

Why Sub Panels Require a 3Wire Cable with a Ground Wire
Jim, when an electrical panel is used as the main service panel, the ground and neutral terminal strips are used for both the ground and neutral wire terminations.

4Wire Panels with Neutral and Ground Isolation

Neutral Wire Terminals and Ground Wire Terminals

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Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all projects.

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