Nec 100 amp service wire size4/29/2024 The current "state of the art" is 60A circuit, however as larger EVs show up such as the Rivian, Lightning and the like, 100A circuit is the emerging top tier. As such a significant amount of oversubscription is OK.ĮVs are a special rule, though. I generally use machines one at a time, with the exception of compressor + tool that uses air. Whoever you're talking to, surely they mean that. When you say 2-2-2-4, well, 2-2-2-4 aluminum MH feeder is common, and dead-nuts correct for your application. ![]() If your service (what the power company gives you) is >100A this exception does not work for you. #2 aluminum is an extremely popular size, because a special exception in Code allows it to be used for 100A services which power a dwelling. Yes, there was a "thing", but it doesn't relate to large wires, for known reasons. There is nothing wrong with aluminum wire at these large feeder sizes. That would be #4 copper, or #2 aluminum for 85A or 90A, respectively. Good or bad, doesn’t matter id love to hear it. And I can save some money by going with a smaller wire and panel.Īny thoughts on any of the above is appreciated. ![]() I ask because most people I’ve talked to have said I may be overshooting my target with this project. My question is, does a copper 2-2-2-4 wire sound correct for an 80amp subpanel 100ft away from the main panel? And is 80amps overkill for the items im attempting to supply power to now and in the possibility future? In the future I may add a 230VOLT compressor and a EV charger, so im shooting for an 80amp subpanel to leave my options open. Im hoping to power a Bridgeport Mill (5.6amps), a Leblond Lathe (2.2 Amps), and a 220volt welder. Using this website ( 100 Amp Wire Size: Which AWG Wire For 100 Amps? (NEC Code)) I’ve calculated that I will be needing to use a 2-2-2-4 CU wire that can handle 115amps. ![]() The garage is attached to the home but is on the far opposite corner of the house from the main panel.If I run the wiring internally through the walls and attic I’m measuring a 100ft run. I’ve been doing som research to install an 80amp subpanel in my garage.
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