thhn wire size for 100 amps | Solar panel wholesaler

thhn wire size for 100 amps

Best answer


A 100 amp service will need a minimum of1.25 inches,schedule 40 or 80 PVC grey electric conduit. You can use a larger conduit if necessary to maintain the inner fill of 40% or less. A 1.5 or 2-inch conduit is best if running three or more electrical wires within the same electric conduit.

People also ask


  • What is THHN wire made of?

  • Depending on the size, it comes in either a stranded or a solid wire. It uses either aluminum or copper as the conductive material. Finally, polyvinyl chloride (PVC) wraps the conductive material and serves as insulation. THHN rates at 75C in a wet location or 90C in a dry location.

  • What size wire do I need for 100 amps?

  • First, check the wire gauge chart here. You have all the AWG copper wires and their ampacities listed (at median 75C or 167C temperature). From that chart, you can see that we have 4 wire sizes with amps in vicinity of 100 amps. These are: Now, it seems that a #3 AWG wire with 100 ampacity is the perfect 100 amp wire size.

  • What is the difference between THHN and thermoplastic heat resistant wire?

  • Although the Thermoplastic Heat and Water-Resistant Nylon-coated wire is a better version of the THHN, you can still find both across different infrastructures. With the help of the NEC AWG wire size ampacity rating chart, you can make sure that you鈥檙e using the right one when working on electrical projects.

  • What wire size for 100 amp sub panel that’s 200 feet away?

  • What Wire Size For 100 Amp Sub Panel That’s 200 Feet Away? 鈥?Upgraded Home What Wire Size For 100 Amp Sub Panel That鈥檚 200 Feet Away? Choosing the right size wires for your sub panel is a matter of safety. It varies for several reasons, but you generally need 1 AWG copper wire for a 100 amp sub panel.

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