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Old 04-04-2013, 08:30 AM   #16
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Originally Posted by k_buz View Post
#4 CU Table 310.15 (B) (7)
(2011 Code) 310.15 (B) (17) shows ampacity of single insulated conductors in free air.

310.15 (B) (16) is ampacity of not more than three current carrying conductors in raceway.

In my area, the POCO will not touch a service with anything under #2 CU (even though #3 CU is rated).
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Old 04-04-2013, 09:43 AM   #17
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I have no way of knowing what your POCO requires, but the NEC allows #4 for a 100A resi service.
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Old 04-04-2013, 12:20 PM   #18
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Correct Wire Gauge

Ok, thanks KBSPARKY -that was what i figured somebody would claim.

So what are the options now (other than service change)?

Run the #4 to a subpanel with a 50amp breaker that supports #4. Then on a separate/second 50amp breaker in the subpanel connect to the 50amp in main using #6? (Note: the reason I can't just go get a different 50amp breaker to support #4 is that the load center is Federal Pacific and this is the only option I have to fit in the space that is available in the load center.

Based on the price of these UBIF breakers i could probably even go out and buy a new load center. Can anybody provide feedback on the difference between GE breakers that cost $8 and a UBIF equivalent that costs $40? I'm I really getting what I pay for, or am I paying for the cost of obsolescence?
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Old 04-04-2013, 12:47 PM   #19
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Originally Posted by dfelb8 View Post
Thanks Techy and Lawyer!

Toller, if I wanted to simply ignore code I wouldn't be posting at all. The intent was to find the "reason" you alluded to. The mfg does not provide one (or even a legible label for that matter) and there does not appear to be any logical reason why a little more copper would be a bad thing if the connections fit properly. Can you come up with a good technical explanation? Otherwise, for all we know I'm exceeding the requirements of the code...
If you want to know the reason, ask them; but it doesn't really matter. Exceeding the manufacturer's requirements is a code violation.
Its that simple.
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