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Electrical Wire and Cable

Adding Circuits to a Sub-Panel

How can I add more circuits to a sub panel? I want to add four more circuits to my electric panel box. How to Add Circuits to a Panel and Determine the Number of Circuits That Can be Added to a Sub Panel.

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Installing Electric Circuits for a Sub Panel
Electrical Question: How can I add more circuits to a sub panel?

I have a 60 amp breaker panel in a small 8oo square foot house with a natural gas furnace and natural gas water heater. I want to add four more circuits for a dryer, dishwasher, and two 15 amp circuits. There are nine open spots left in the electric panel. If I add these four circuits will I still be within code for a 60 amp panel?

Background: Tom, who is a Handyman from Ottawa, Ontario Canada.
Additional Comments: Very Informative!

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

How to Add Circuits to a Sub Panel

Application: Adding CircuitsĀ  to a Sub Panel.
Skill Level: Advanced – Best installed by a Licensed Electrical Contractor or Certified Electrician.
Tools Required: Electricians pouch of hand tools, voltage tester and protective safety gear.
Estimated Time: Depends on the make and model of the sub-panel and the condition of the existing electrical circuit breakers and the wiring methods.
Precaution: For safety the main circuit breaker should be turned off or any other disconnect means that would turn off the power to the panel before replacing a circuit breaker, however turning off the main circuit breaker may not turn off the power to all of the areas of the sub-panel components and wiring. This is an extensive project that requires experience and should be performed by a Licensed Electrical Contractor.
Notice: Making changes to electric sub-panel or electric circuits should be done according to local and national electrical codes with a permit and be inspected. Geographical Application: All areas of the World and all Foreign and Domestic Electrical Systems.
Do you need more circuit breaker space? See how to add a sub panel to an existing main panel.

Determine the Number of Circuits that Can be Added to theĀ  Sub Panel

The Space Capacity of a Sub Panel

Determine the Proposed Circuit Loads for a Sub Panel

The Amperage Capacity of a Sub Panel

See More about Electrical Circuits

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House Wiring Circuits and Circuit Breakers

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The size of the home electrical service panel is designed by calculating the square footage of the home and factoring in the code requirements for the electrical circuits that are required.

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Electrical Code Directory covering electrical circuits and electrical service panels.

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Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
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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 Electric Wiring Projects.

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