In this article, we will discuss the 70 amp sub panel wiring diagram. A sub panel is a separate electrical panel that is connected to the main panel. It provides additional circuits and power to an area of the house that requires more power than the main panel can provide. A 70 amp sub panel is commonly used to provide power to an addition or large appliance.
What is a Sub Panel?
A sub panel is an electrical panel that is connected to the main electrical panel. It provides additional circuits and power to an area of the house that requires more power than the main panel can provide. A sub panel is commonly used when adding an addition to a house, installing a large appliance, or when the main panel is full.
A sub panel has its own circuit breakers and is connected to the main panel with a feeder cable. The feeder cable is typically a 240-volt cable with three wires: two hot wires and a neutral wire. The feeder cable connects to a double-pole circuit breaker in the main panel and to a double-pole circuit breaker in the sub panel.
Wiring a 70 Amp Sub Panel
Wiring a 70 amp sub panel requires a feeder cable, a double-pole circuit breaker in the main panel, a double-pole circuit breaker in the sub panel, and individual circuit breakers for each circuit in the sub panel.
The first step in wiring a 70 amp sub panel is to turn off the power to the main panel. Next, install the double-pole circuit breaker in the main panel and connect the feeder cable to the circuit breaker. The feeder cable should be run through a conduit from the main panel to the sub panel location.
Next, install the double-pole circuit breaker in the sub panel and connect the feeder cable to the circuit breaker. The neutral wire should be connected to the neutral bar in the sub panel and the ground wire should be connected to the ground bar in the sub panel.
Finally, install individual circuit breakers in the sub panel for each circuit. The size of the circuit breakers should match the size of the wire used for each circuit.
70 Amp Sub Panel Wiring Diagram
| Main Panel | Sub Panel |
|---|---|
| Double-Pole Circuit Breaker | Double-Pole Circuit Breaker |
| Feeder Cable | Feeder Cable |
| Neutral Bar | Neutral Bar |
| Ground Bar | Ground Bar |
| Circuit Breakers for Other Circuits | Individual Circuit Breakers for Each Circuit |
FAQ
What size wire should be used for a 70 amp sub panel?
The feeder cable for a 70 amp sub panel should be 4 AWG copper or 2 AWG aluminum.
Can a 70 amp sub panel be installed by a homeowner?
A homeowner can install a 70 amp sub panel, but it is recommended that a licensed electrician be hired to do the work.
How many circuits can a 70 amp sub panel handle?
A 70 amp sub panel can handle up to 12 circuits, depending on the size of the circuit breakers used.
What is the purpose of a sub panel?
A sub panel provides additional circuits and power to an area of the house that requires more power than the main panel can provide.
What is the difference between a main panel and a sub panel?
A main panel is the electrical panel that provides power to the entire house, while a sub panel provides additional circuits and power to a specific area of the house.
