Single Phase Residential Dwelling Services and Feeders

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To find the AWG wire size or Amp Rating of a Single Phase Service or Feeder to a home or single family unit, use the chart below.

Service or Feeder Rating Amps and AWG (or kcmil) Wire Size Chart

Copper Wire Size	Aluminum Wire Size	Service or Feeder Amps
4 AWG	2 AWG	100
3 AWG	1 AWG	110
2 AWG	1/0 AWG	125
1 AWG	2/0 AWG	150
1/0 AWG	3/0 AWG	175
2/0 AWG	4/0 AWG	200
3/0 AWG	250 kcmil	225
4/0 AWG	300 kcmil	250
250 kcmil	350 kcmil	300
350 kcmil	500 kcmil	350
400 kcmil	600 kcmil	400

Table 310.12, 2020 NEC^®

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