215.2(A)(2) Ampacity Relative to Service Conductors

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Bob, I agree with your interpretation and I have been wiring with 3/0 copper between meter and disco for at least 5 years now but I still think they blew the wording of this. It could have been very simple to fix by adding a comma after feeder conductors. They also could have said "any of the following conductors that serves the entire load of the house" then list them... SEC, SEL, and feeders.
 
iwire said:
Dennis I really think it says what the intent is, I do agree the use of the term "main power feeder" makes i less clear.

IMO The key to it is the term "that serve as"


  • service-entrance conductors that serve as
  • service-lateral conductors that serve as
  • feeder conductors that serve as


the main power feeder to each dwelling unit and are installed in raceway or cable with or without an equipment grounding conductor.


Used in this particular code section "main power feeder" includes service conductors and feeder conductors.


Any of the conductors in that list that serve the entire dwelling unit can take advantage of the table.
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Exactly, this is what I was trying to say although a lot easier to understand :grin:
 
augie47 said:
IF TN adopts '08, that is one of many that will haunt us inspectors for a long while. The 2/0s may have been incorrect for a long time and, I agree, '08 clarifies, but it's gonna be hard teachin' that many dogs a new trick.
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I agree, this is going to be very interesting for us. I know some of the ECs around here try to use 310.15(B)(6) for subpanels and HVAC.
 
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