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Standard Sizes High Temp
Reference Tables of Conductors for General Wiring
Class H Class I Class K DLO Conductor’s Nominal Diameters
26 to 20 AWG 18 to 12 AWG 10 to 6 AWG 4 to 2 AWG 1 to 1/0 AWG 2/0 to 4/0 AWG 250 to 350MCM 400 to 750MCM
Size
(AWG/mm2)
Item # L1
(mm/in)
D
(mm/in)
D1
(mm/in)
D2
(mm/in)
Qty. Price
4 AWG
(25.00mm2)

True 4 AWG
(21.2mm2)
N250012 12.0/.472 7.8/.307 7.2/.283 9.1/.358 100 $6.08
SF212012 12.0/.472 7/.276 6.6/.26 8.8/.346 100 $6.48
NT250012 12.0/.472 7.8/.307 7.2/.283 9.1/.358 100 $6.69
 
4 AWG
(25.00mm2)
N250015 15.0/.591 7.8/.307 7.2/.283 9.1/.358 100 $6.20
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4 AWG
(25.00mm2)

True 4 AWG
(21.2mm2)
N250016 16.0/.629 7.8/.307 7.2/.283 9.1/.358 100 $6.39
SF212016 16.0/.629 7/.276 6.6/.26 8.8/.346 100 $8.10
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4 AWG
(25.00mm2)

True 4 AWG
(21.2mm2)
N250018 18.0/.709 7.8/.307 7.2/.283 9.1/.358 100 $6.48
SF212018 18.0/.709 7/.276 6.6/.26 8.8/.346 100 $8.64
NT250018 18.0/.709 7.8/.307 7.2/.283 9.1/.358 100 $9.10
 
4 AWG
(25.00mm2)

True 4 AWG
(21.2mm2)
N250020 20.0/.787 7.8/.307 7.2/.283 9.1/.358 100 $7.02
SF212020 20.0/.787 7/.276 6.6/.26 8.8/.346 100 $10.80
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4 AWG
(25.00mm2)
N250022 22.0/.866 7.8/.307 7.2/.283 9.1/.358 100 $7.88
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NT250022 22.0/.866 7.8/.307 7.2/.283 9.1/.358 100 $14.30
 
4 AWG
(25.00mm2)

True 4 AWG
(21.2mm2)
N250025 25.0/.984 7.8/.307 7.2/.283 9.1/.358 100 $8.24
SF212025 25.0/.984 7/.276 6.6/.26 8.8/.346 100 $13.50
NT250025 25.0/.984 7.8/.307 7.2/.283 9.1/.358 100 $14.20
 
4 AWG
(25.00mm2)
N250028 28/1.10 7.8/.307 7.2/.283 9.1/.358 100 $8.80
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4 AWG
(25.00mm2)

True 4 AWG
(21.2mm2)
N250030 30.0/1.18 7.8/.307 7.2/.283 9.1/.358 100 $8.91
SF21030 30.0/1.18 7/.276 6.6/.26 8.8/.346 100 $16.20
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4 AWG
(25.00mm2)
N250032 32.0/1.26 7.8/.307 7.2/.283 9.1/.358 100 $9.72
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2 AWG
(33.6mm2)
N350012 12.0/.472 8.4/.331 8/.315 10.2/.402 100 $6.40
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NT350012 12.0/.472 8.4/.331 8/.315 10.2/.402 100 $9.60
 
2 AWG
(33.6mm2)
N350015 15.0/.591 8.4/.331 8/.315 10.2/.402 100 $6.74
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2 AWG
(33.6mm2)
N350016 16.0/.629 8.4/.331 8/.315 10.2/.402 100 $6.88
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2 AWG
(33.6mm2)
N350018 18.0/.709 8.4/.331 8/.315 10.2/.402 100 $6.95
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NT350018 18.0/.709 8.4/.331 8/.315 10.2/.402 100 $11.10
 
2 AWG
(33.6mm2)
N350020 20.0/.787 8.4/.331 8/.315 10.2/.402 100 $7.70
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2 AWG
(33.6mm2)
N350022 22.0/.866 8.4/.331 8/.315 10.2/.402 100 $7.88
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NT350022 22.0/.866 8.4/.331 8/.315 10.2/.402 100 $13.80
 
2 AWG
(33.6mm2)
N350025 25.0/.984 8.4/.331 8/.315 10.2/.402 100 $8.97
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NT350025 ----- ----- ----- ----- ----- -----
 
2 AWG
(33.6mm2)
N350030 30.0/1.18 8.4/.331 8/.315 10.2/.402 100 $9.32
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2 AWG
(33.6mm2)
N350032 32.0/1.26 8.4/.331 8/.315 10.2/.402 100 $10.26
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