# How to Determine if Your Panel Has The Power for One More Circuit

 How to Check the Capacity of an Electrical Panel for an Additional Circuit: Available Amperage of the Panel, Adding a Circuit Breaker

## Adding a Circuit Breaker to an Electric Panel

Electrical Questions: Can I add an additional circuit breaker to my electric panel?

1. I have 200 amp’s of power coming into the panel at my house.
• I would like to add a 20 amp circuit to the panel.
• How do i determine if there is enough power left to do so.
• This electrical wiring question came from: Mike, a Homeowner from Madison Heights, Michigan.
2. I’d like to add a 50-amp circuit breaker to my existing panel.
• I checked service panel and there’s a space for it.
• Does this mean it is safe to add without upgrading the service panel to a higher amp rating?
• This electrical wiring question came from Ana, in Dublin, California.

Thanks for your electrical wiring question Mike and Ana.

### The Circuit Capacity of an Electrical Panel

Preparation

• Skill Level: Intermediate to Advanced.
• Tools Required: Basic Electricians Pouch Hand Tools.
• Estimated Time: Depends on personal level experience, ability to work with tools and install electrical circuit wiring.
• Notice: Installing additional electrical circuit wiring should be done with a permit and be inspected.

## How to Check the Capacity of an Electrical Panel

• ### Electric Panel Capacity

• Typically adding a circuit to an electric panel is rarely an issue when the main panel has a 200 amp rating.
• The actual load of the new circuit that will be connected on the panel will need to be identified, and may actually be less than the circuit breaker size, however the total connected load of the electric panel must be evaluated.
• ### Adding a Circuit Breaker

• An electrician can get a rough idea of the available capacity of the panel by looking at the number of breakers that are installed, the amp ratings of the circuit breakers and the brand and type of panel.
• How Circuit Breakers Are Installed Into a Panel
• ### Available Amperage of the Panel

• A clamp on amperage reading may be taken to see what the load is at that given time, however the load will change according to equipment used at peak demand periods, such as when air conditioners are switched on, or the oven is used.
• ### How to Accurately Know Electrical Usage and Available Amperage

• A very accurate method to see how much electricity is used at the home is to look at the electric utility bill and notice the peak kW and kWH which has been consumed.

#### More about Electrical Panels and Circuit Breakers

Electrical Panel Circuit Listing

Electric panel

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.

### Electrical Circuit Breaker

A guide to home electrical circuit breakers and how they work to protect your electrical wiring. When properly installed, your home electrical wiring is protected by a circuit protection device.

Circuit Wiring

Electrical Circuit Wiring
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.

 » You Can Avoid Costly Mistakes! « Here's How to Do It: Wire It Right with the help of my Illustrated Wiring Book Great for any Home Wiring Project.

## Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handywomen, 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.

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