#100 AMP SUB PANEL WIRE SIZE INSTALL#

The gauge number refers to the thickness of the wire. A #14 AWG wire is typically acceptable for a circuit with general lighting and electrical receptacles. A #10 AWG wire may be used for a 30-amp appliance while a #8 AWG wire can accommodate a 45-amp appliance. How a Sub-Panel Wire Differs from Standard Home Wiringįor any wire, the proper size is determined by the circuit’s amp rating and type of electrical installation. The sub-panel contains circuit breakers serving areas like a garage, home addition, or shed. The wire connects the sub-panel to a main feeder breaker disconnect, which is connected to a 200-amp meter box. #2/0 AWG copper or #4/0 AWG aluminum wire for a 200-amp sub-panel.#1/0 AWG copper or #3/0 AWG aluminum wire for a 175-amp sub-panel.#1 AWG copper or #2/0 AWG aluminum wire for a 150-amp sub-panel.#2 AWG copper or #1/0 AWG aluminum wire for a 125-amp sub-panel.#3 AWG copper or #1 AWG aluminum wire for a 110-amp sub-panel.However, wiring requirements change depending on the sub-panel’s capacity.

The minimum conduit size is 1.25 inches and a schedule 40 or 80 PVC electrical conduit is specified for lines run underground. If using an aluminum or copper-clad aluminum wire, a #2 AWG wire can be used. The National Electric Code (NEC) requires a #4 American Wire Gauge (AWG) copper wire for sub-panels. Wiring Requirements for Electrical Sub-Panels For copper, you will need a 4-gauge wire for a sub-panel. The right type of wiring must be used as well. The panel should be rated at least 100 amps and you’ll need a permit to perform the work (which generally requires an electrician ).

#100 AMP SUB PANEL WIRE SIZE INSTALL#

There are lots of requirements to install one. Should I Use a 4 Gauge Wire for a Sub-Panel?Īn electrical sub-panel may be used for a room addition or detached garage.

100 amp sub panel wire size