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Is it Safe to Replace Circuit Breakers in a Breaker Box?

I have a 200 amp breaker box, I want to replace two circuit breakers, is this OK? The total load on the breaker box is not the total of all of the breaker ratings added up.

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Breaker Box Circuit Breakers
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Electrical Question: I have a 200 amp breaker box, I want to replace two circuit breakers, is this OK?

Replacing Circuit Breakers

Tyler asks: I have a 200 amp breaker box. Right now all the breakers in the box add up to about 235. I plan to replace two 25 amp breakers with two 40 amp breakers. This will take the total breakers in the box up to about 325. Is that OK?

Additional Comments: Nice site

Dave’s Reply:

Thanks for your electrical wiring question Tyler.

Breaker Box Circuit Breaker Capacity

Application: Breaker Box and Circuit Breakers.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrical Contractor, or Certified Electrician.
Electrical Tools Required: Basic Electricians Pouch Hand Tools, Voltage Tester, and appropriate Safety Gear.
Estimated Time: Depends on the personal level experience, ability to work with tools, install electrical circuit wiring, and the available access to the project area.
Electrical Safety: Identify the electrical power source to the Generator Circuit Breaker, turn it OFF and Tag with a Note before working with the electrical wiring.
Electrical Wiring Parts and Materials: Electrical parts and materials for the Generator Circuit Breaker should be approved for the specific project and compliant with local and national electrical codes.
Electrical Codes and Inspections: Installing or changing home electrical wiring should be done according to local and national electrical codes as adopted in your specific area of Ohio. A permit and inspections may also be required.

Circuit Capacity in a Breaker Box

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Electrical Junction Boxes for Home Wiring

Understanding electrical junction boxes and what they are used for. Home electrical wiring is the process of installing electrical wire to a location that will serve electrical devices or an appliance. One very important component is the box where the wire will be installed. The type and size of the home wiring electrical boxes will depend upon the circuit size, application and its location.

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Dave's Companion Guide to Home Electrical Wiring:

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Great for any Home Wiring Project.
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Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, and Electricians
Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.



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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.