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Re: OT: Barn Electric
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Posted by John T on November 17, 2006 at 15:56:18 from (66.244.90.5):
In Reply to: Re: OT: Barn Electric posted by RustyFarmall on November 17, 2006 at 14:08:23:
Rusty, I gotta agree with my old engineering buddy Gerald on this one. According to my Uglys Electrical reference data the ampacity of No 2 aluminum THWN or XHHW insulated conductors even in free air (youre buried) at 30 degrees C is ONLY 135 amps sooooooooooooooooooo No 2 is wayyyyyyyyyyyy under ampacity if its fuzed way up at 200 amps YIKESSSSSSSSSSSSSSS The No 2 is more of a common size for a 100 amp,,,,,,,, NOT a 200 amp service. Thats NOT to say it dont work fine provided youre NOT pulling any big loads buttttttttttt if you try to continually draw 200 amps on those No 2 conductors youre gonna eventually experience a meltdown lol Sure its not just a 100 amp service????????????? Its hard to believe any competent electrician would have only used 100 amp rated feeder conductors on a 200 amp service ?????????? PS maybe you have a 200 amp panelboard but its just fuzed/circuit breaker protected at 100 amps !!!!!!!!!!!! cuz I just dont see how they would have tried to provide 200 amps of service
with only 100 amps worth of wire !!!!!!! John T Long retired EE
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