Your home’s electrical system powers everything from lighting to appliances and comfort systems. Knowing the basics helps you keep it safer and better maintained.
Here’s a simple overview of how electricity is distributed in most homes:
Power enters through an overhead service head or an underground connection, typically with two 120V lines and a neutral.
Standard circuits use 120V for everyday outlets and smaller appliances.
High-demand appliances like water heaters, ranges, and dryers often use 240V circuits.
An outdoor electric meter tracks consumption for your utility provider—never tamper with it.
The main service panel distributes power and uses breakers/fuses to protect circuits during faults.
Grounding connects the system to earth and reduces shock risk during shorts or overloads.