al hildenbrand said:
In Minnesota, the take is:
Any new 125V, 15 or 20A outlet added to an existing dwelling that is in a bedroom must be from an AFCI circuit.
But for the other 49 states we still have a question
Jim W in Tampa said:
I see no loopholes in nec.Any added outlets require afci.Says nothing about cost.Now if the town wants to change the code with ammendments then fine.But if your hired to enforce nec then do it.Backing off on this is unfair to the ec that bids it to code.Get them red tags out and use them.
I don?t think it?s as clear cut as that. . Since the requirement of 210.12(B) is
circuit specific, there is room to dispute an AFCI requirement for an
extension of an
existing branch circuit.
allenwayne said:
This brings up an intruiging subject.How can the afci requirement be enforced if a panel like a zinsco(exsisting) doesn`t have an afci available.This creates a double edged sword.The new install has to be afci protected but there is no available afci for the existing panel.
al hildenbrand said:
As for the Zinsco panel issue, leave it alone. . .set a small subpanel that will accept one (or mere) of the currently manufactured AFCI circuit breakers.
If the main pane l doesn?t have AFCI available or are too expensive to purchase, adding a subpanel is the obvious solution
cowboyjwc said:
Ok, I don't want to turn this into a big debate, but I was asked by my boss to do some research and what better place to start than here.
1. New bedroom addition, old panel (Zinsco, etc). AFCI? Yes or no?
2. Add square footage to existing bedroom. I say no.
3. Bedroom addition with panel upgrade. Yes
4. Bedroom remodel? Depends on extent?
Thanks for your time.
In our department we have a policy that I believe is the best balance. . None of the proceeding questions would determine the AFCI answer. . I would need to ask 2 questions
Are you running new homeruns for the new outlets ?
If not, does the total area served [combining new and existing rooms served] exceed the capacity of any extended circuits ?
The answer to the second question can be determined by answering other questions.
Does an extension of an existing 20amp circuit cause it to supply power to an area larger than 800 square feet ?
If 2 20amp circuit both serve an area, do they exceed 1600 square feet?
3 circuits, 2400 square feet ?
Does an extension of an existing 15amp circuit cause it to supply power to an area larger than 600 square feet ?
If 2 15amp circuits both serve an area, do they exceed 1200 square feet?
David