How to Install a New Circuit Breaker

This topic makes me nerves, make sure its your home and not your wife’s friend. The Electrical code is pretty clear if your not a licenced electrician don’t touch other peoples wiring. On the other hand most areas will let you work on your own home, check the local codes and don’t use me as your excuse for doing something wrong. Ok Below is a Video from Generation 3 Electric and a story from Timothy Thiele at About.com. They will show your how to pop in your circuit breaker, and don’t forget a bathroom wall heater will need its own breaker. You can’t tape into the near buy electrical outlet, it not my rule its a national code.

Video by 

on Jan 11, 2009

This is a how to video on installing a new wire and breaker to a pre-existing breaker panel. Sorry for the darkness, some basements don’t have much light ; )

 

How to Install a New Circuit Breaker

By , About.com Guide

Electrical disconnects are generally mounted below the electric meter on the side of your home or on the utility company’s power pole. Their purpose is to disconnect power to the home from the outside of the home. A great example would be in the event of a fire within the home. Neither you or the fire department wants to go into a burning building to turn off the power. The electrical disconnect can be shut off outside where the fire isn’t and then the fire department can put out the blaze without fear of electrocution.

Difficulty: Average

Time Required: 15 – 30 Minutes

Here’s How:

1. Where Does The Feed Come From

The electrical wiring to feed the disconnect is fed from the load side of the electric meter. There are two hot wires that both carry 120 volts and are different phases. These phases are normally called “A” and “B” phases. The total voltage when measured between them is around 240 volts. These wires connect to the disconnect breaker installed within the disconnect box. In this example, the breaker is a 100-amp Square D two-pole breaker.

 

2. Feeding the Line Side of the Breaker

The wires connect to the top two lugs of the breaker called the “line” side of the breaker. The neutral wire connects to the silver-colored lug along the side of the breaker. Mark this wire with white phasing tape to signify that it is the neutral wire.

 

3. Feeding the Load Side of the Breaker

The bottom of the breaker is for the “load” side wiring. The wires that connect here feed the electric panel in your home. Connect the two “hot” wires to the bottom of the breaker. The neutral wire connects to the silver-colored lug along the side of the breaker. Mark this wire with white phasing tape to signify that it is the neutral wire.

 

4. What Do the Electrical Disconnect Wires Feed?

The electrical disconnect feeds the breaker panel in your home. The feeder wires connect to the main breaker in the panel and the neutral wire connects to the neutral buss.

Do you want to learn more about How an Electrical System Works?