![]() The NEC also dictates that you should use a solid conductor wire. (Aluminum is often used for feeder cables because the cost is typically much lower than that of copper wires. The National Electrical Code dictates that for a 100 amp sub panel, you should use 10 gauge wire. a 100-amp subpanel requires 4 copper wires or, more commonly, 2 aluminum wires, for example. ![]() Please note Wire And Cable Your Way does recommend consulting with a local electrician who can advise you on all local codes and other variables that may effect the wire size needed such as the length of your run.įeel free give us a call at 85 or email us here with any questions. The gauge of the wire that is used to wire up a sub panel should be determined by the amount of current that will be flowing through it. If you have to power an electric device 100 feet away, you need 20 amps more. Example: 50 amp wire is usually the 6 AWG (we require at least 62.5A and 6 AWG can handle 65A). Single Conductor #1 gauge Aluminum WireĬlick here for pricing on #1 gauge Aluminum wire 3.) 2-2-2 Ramapo Triplex Underground Secondary Distribution Cable for 100 Amp Sub-PanelĬlick here for pricing on 2-2-2 (URD) Triplex Aluminum Underground CableĪll of the cables above are in stock, available by the exact foot you need, and shipped the same day ordered. How far can you run 6 gauge wire for 50 amps For every 100 feet, voltage drops by 20. The subpanel probably isnt far enough away from the main to require its own grounding rod (s), but regardless, it does require a 4 wire feed from the main panel (2 ungrounded conductors, 1 grounded conductor/neutral, one EGC), and the neutral and grounding buses in the panel must be isolated.Single Conductor #2 gauge Aluminum WireĬlick here for pricing on #2 gauge Aluminum wire 2.) #1 XHHW-2 Wire for 100 Amp Sub-Panel.Rated for direct burial - no need for conduitĬlick here for pricing on #2/3C with ground Tray Cable (THHN-PVC) Aluminum Wire 1.) #2 XHHW-2 Wire for 100 Amp Sub-Panel.Multi-Conductor #3 gauge THHN Copper Wire. ![]() 110.14 (C) (1) (a) tells us, that since we're working with 100 amperes or less. Single Conductor #2 gauge THHN Copper WireĬlick here for pricing on #2 gauge THHN wire 3.) #2/3C with ground Tray Cable (THHN-PVC) for 100 Amp Sub-Panel While the cable/wire may be rated at 90C, you'll likely find that the terminals are rated at 75C, or not labeled at all.Single Conductor #3 gauge THHN Copper WireĬlick here for pricing on #3 gauge THHN wire 2.) #2 THHN/THWN-2 Wire for 100 amp sub-panel.Copper Wire 1.) #3 THHN/THWN-2 Wire for 100 Amp Sub-Panel Looking for the right size wire for your 100 amp sub-panel for a detached building, garage, or shed?īelow are the best selling wires our customers use for service to a 100 amp sub-panel - all available by the foot at our store. ![]()
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