The wire size for 100 amp service depends on the distance between the service panel and the device it is powering, as well as the type of wire being used. Here are some general guidelines based on the search results:
- Most 100-amp service panels require #2 AWG wire.
- For a 100-amp service, typical sizes of wires are 4 AWG or 2 AWG for copper wiring and 2 AWG, 1 AWG, or 1/0 AWG for aluminum or copper-clad wiring.
- The size wire you need for a 100-amp sub panel is a 3 gauge (AWG), 0.2294 in (5.827 mm) diameter copper wire.
- With the 80% NEC rule, the best wire size for 100 amp service is #1 AWG.
Its important to note that if the run of the wire is significantly long, such as over 100 feet, a larger size wire may be needed to accommodate for voltage drop. Additionally, the ground wire size for 100 amp service is typically 8 AWG copper grounding wire or 6 AWG aluminum grounding wire. It's always best to consult with a licensed electrician to determine the appropriate wire size for your specific situation.
