Wiring a sub panel breaker box may seem daunting, but with the right tools and knowledge, it can easily be accomplished. A sub panel breaker box is a secondary electrical panel that is connected to the main panel via a feeder wire. This allows for additional circuits to be added to a building without overloading the main panel. In this article, we will provide a step-by-step guide on how to wire a 100A sub panel breaker box.
Tools and Materials Needed
Before starting the wiring process, it is important to gather all of the necessary tools and materials. Here is a list of items that will be needed:
| Tools | Materials |
|---|---|
| Wire cutters/strippers | 100A sub panel breaker box |
| Screwdrivers | Feeder wire |
| Hammer | Grounding rod and clamp |
| Drill and bits | Wiring connectors |
| Pliers | NM cable clamps |
Step-by-Step Guide
Step 1: Turn off Power
Before starting any electrical work, it is important to turn off the power to the main panel. Verify that the power is off by testing the wires with a voltage tester.
Step 2: Mount the Sub Panel
Mount the 100A sub panel breaker box in a location that is easily accessible and within reach of the feeder wire. Use a level to ensure that it is installed straight.
Step 3: Install Feeder Wire
Run the feeder wire from the main panel to the sub panel breaker box. Use appropriate wiring connectors to connect the feeder wire to the appropriate lugs in both panels. Make sure that the feeder wire is properly grounded.
Step 4: Install Circuit Breakers
Install the circuit breakers in the sub panel breaker box. Label each circuit breaker with the corresponding circuit it will control.
Step 5: Connect the Circuits
Run NM cable from each circuit to the breaker in the sub panel breaker box. Use NM cable clamps to secure the cable in place. Connect the circuit wires to the corresponding circuit breaker.
Step 6: Test the System
Turn the power back on and test each circuit to ensure that everything is functioning properly. If there are any issues, double-check the connections or consult an electrician.
FAQ
What is a sub panel breaker box?
A sub panel breaker box is an electrical panel that is connected to the main panel via a feeder wire. It allows for additional circuits to be added to a building without overloading the main panel.
What size feeder wire is needed for a 100A sub panel breaker box?
A 100A sub panel breaker box requires #3 copper or #1/0 aluminum feeder wire.
How do I ground a sub panel breaker box?
To ground a sub panel breaker box, connect a grounding rod to the grounding lug in the panel and use a grounding clamp to attach the feeder wire to the rod.
Can I install a sub panel breaker box myself?
While it is possible to install a sub panel breaker box yourself, it is recommended to consult an electrician to ensure that the work is done safely and up to code.
What is the purpose of a sub panel breaker box?
A sub panel breaker box allows for additional circuits to be added to a building without overloading the main panel. It is often used in larger buildings or homes with a high electrical demand.
