A Guide for Understanding Your Breaker Panel | Mr. Electric
The 'Big' One - The Main Breaker. This switch is serves as the on/off for electricity in your entire home. 200-amps is typical for homes around 2,000 square feet, with smaller homes utilizing 150 or 100-amp varieties. In the case of an emergency, you can turn off power to your entire home by flipping this switch.
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