200 ampere sub panel for a building and underground aluminum feeder

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Jpflex said:
Yes

I understood all this but my concern was regarding if code would allow terminating onto a larger breaker (but not whether it would cause excessive current and heat for conductor) than conductor 60 to 75 degree terminating ampacity. Code can always overrule something that works and not allow it just because it’s a code.
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The code allows terminating onto a larger breaker than what the wire is rated for as long as it is protected at its origin by a breaker sized to its ampacity.
That is not your problem. Your problem is using a wire that is not an approved wiring method.
 
qcroanoke said:
The code allows terminating onto a larger breaker than what the wire is rated for as long as it is protected at its origin by a breaker sized to its ampacity.
That is not your problem. Your problem is using a wire that is not an approved wiring method.
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Yes I got yea. Unfortunately the owner boss (not an electrician) seems to want to order conductors based on value and sized he believes are correct
 
Do what you will.... all we can tell you is, at best, it's a 90 amp conductor not approved for any interior install.
 
I know you say it’s not for interior install but what about just terminating to the outside sub panel feeder phase bus terminals or if located panel inside only terminating to feeder bus terminals (which I guess you would say no)

I made this post because I suspected these cables would not meet code as I clearly see it doesn’t with all the feedback. I guess all I can do is document everything to cover my butt, but do as my boss says!

I assume to use and protect these at 90 amperes according to your advice unless the owner makes me undo this for a higher service breaker on its line side OCPD
 
Jpflex said:
Yes

I understood all this but my concern was regarding if code would allow terminating onto a larger breaker (but not whether it would cause excessive current and heat for conductor) than conductor 60 to 75 degree terminating ampacity. Code can always overrule something that works and not allow it just because it’s a code.
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I don't know of anything in the NEC that prohibits landing an adequately protected feeder on a larger main breaker in a subpanel.
 
Jpflex said:
I made this post because I suspected these cables would not meet code as I clearly see it doesn’t with all the feedback. I guess all I can do is document everything to cover my butt, but do as my boss says!
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Earlier you mentioned your boss is not an electrician. Whose license is this work being done under? If this work is being done under your license you need to do more to protect yourself, in my opinion...
 
Joe.B said:
Earlier you mentioned your boss is not an electrician. Whose license is this work being done under? If this work is being done under your license you need to do more to protect yourself, in my opinion...
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Business must have a general contractor C10 license. My license is from central electricians association and Federal Communications Commission and electrical certifications but isn’t useful for this purpose in California
 
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