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What is the allowable ampacity of a No.1/0 THWN copper conductor when installed in an ambient temperature of 107° F?

AS PER NEC ?

Electrical Engineering
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Question added by Mohamed salman faris , Senior QA/QC E&I Engineer , Nesma & Partners
Date Posted: 2013/05/20
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Mohamed salman faris
by Mohamed salman faris , Senior QA/QC E&I Engineer , Nesma & Partners

NEC Table310.15(B)(16) lists the allowable ampacity of No.1/0 THWN copper, a75°C rated conductor as150 amperes.
The correction factor is .82150 x .82 =123 amperes

Santosh Aladi
by Santosh Aladi , ELECTRICAL ENGINEER , LANDMARK GROUP

H=I( square).R.T H= heat I= current r= resistance t= time

ahmed al anati
by ahmed al anati , Electrical Department manager, Project manager , Multi Zone Contracting

at75°C conductor ampacity =150 A the correction factor for the ambient temp.
(105-113 F) =0,82 corrected ampacity =150 x0.82=123A

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