For example, the price of a single-pole (120-volt) 15-amp breaker may only cost $5 -- though ... the labor for installation will be between $95 and $350, while electrical permits and inspection ...

This is the on/off switch to the entire breaker panel. A 200-amp breaker is appropriate for a home upwards of 2000 square feet. Smaller buildings can use 150-amp or 100-amp; small homes and ...