FPE Breaker

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sbrown

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I've installed a FPE 150amp breaker rated at 40c.The feeder size is 1/0 thhn copper is this to code. Article 310-16 states that 1/0 cu is rated at 150amps using the 75c chart.By this breaker having 40c issuance will it still work. thanks :roll:
 

augie47

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Staff member
Location
Tennessee
Occupation
State Electrical Inspector (Retired)
Re: FPE Breaker

sounds like a trick question...where does one find a FPE breaker..
I believe 110-14(c) would prohibit the 1/0.
 

infinity

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Location
New Jersey
Occupation
Journeyman Electrician
Re: FPE Breaker

Sounds fine to me. The 40 degree Celsius rating is for the ambient temperature of the breaker not the conductor temperature.
 
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