Okonite Ampacity Tables: 3 Conductor Cable in Conduit

Ampacity Tables
Three Conductor In Conduit

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3 conductor cable - conduit in air

Three conductor cable
— conduit in air

Any load factor from 30 to 100%.

The ampacities are for a single, loaded cable in still air. In a group of loaded cables in close proximity in air, exposed or enclosed, follow the correction method shown on the ampacity correction factors page.

Air ambient temperature 40°C.

One isolated conduit — three conductors in air

Copper

Conductor Size AWG-kcmil	Non-Shielded	Shielded
	600-5000 Volts Ampacity	2001-5000 Volts Ampacity		5001-35,000 Volts Ampacity
	90° C (194°F)	90° C (194°F)	105°C (221°F)	90° C (194°F)	105°C (221°F)
8......... .6......... 4......... 2......... 1......... 1/0......... 2/0......... 3/0......... 4/0......... 250......... 350......... 500......... 750......... 1000........\	52......... 69......... 91......... 123......... 141......... 166......... 190......... 218......... 255......... 282......... 348......... 425......... 524......... 590.........	52... 69... 91... 125... 140... 165... 190... 220... 255... 280... 350... 425... 525... 590...	58... 77... 100... 135... 155... 185... 210... 245... 285... 315... 390... 475... 585... 660...	—... 83... 105... 145... 165... 195... 220... 250... 290... 315... 385... 470... 570... 650...	—... 92... 120... 165... 185... 215... 245... 280... 320... 350... 430... 525... 635... 725...

Aluminum

Conductor Size AWG-kcmil	Non-Shielded	Shielded
	600-5000 Volts Ampacity	2001-5000 Volts Ampacity		5001-35,000 Volts Ampacity
	90° C (194°F)	90° C (194°F)	105°C (221°F)	90° C (194°F)	105°C (221°F)
8......... .6......... 4......... 2......... 1......... 1/0......... 2/0......... 3/0......... 4/0......... 250......... 350......... 500......... 750......... 1000........\	41......... 53......... 71......... 96......... 110......... 130......... 149......... 170......... 200......... 221......... 274......... 341......... 432......... 504.........	41... 53... 71... 96... 110... 130... 150... 170... 200... 220... 275... 340... 430... 505...	46... 59... 79... 105... 125... 145... 165... 190... 225... 245... 305... 380... 480... 560...	—... 64... 84... 115... 130... 150... 170... 195... 225... 250... 305... 380... 470... 550...	—... 71... 94... 125... 145... 170... 190... 220... 255... 280... 340... 425... 520... 615...

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