captainwireman
Senior Member
- Location
- USA, mostly.
I am being told all residential home runs now must be in EMT or MC. Where are my associates getting this? Any ideas?
Residential home runs
- Thread starter captainwireman
- Start date
- Status
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
It would help in telling us where you are located!:happyyes:
Unless this is a local amendment, the NEC has no such requirements.
Chicago is another story!:roll:
captainwireman
Senior Member
- Location
- USA, mostly.
I can't find it either. My fellow electricians are by no means ignorant. I wonder where they got this? What about RMC or flex, for example? I am currently in central Alaska. I will check local codes tomorrow.
- Occupation
- Licensed Electrician
There is something in the '08 and/or '11 code that says if your homerun is in conduit you can use an AFCI device instead of a breaker.
flatlander
Senior Member
- Location
- Diamond bar, CA , Tempe AZ
Yea maybe the guy who said this had a correction where no AFCI are available.
Ya never know what some ignorant person passes along.
- Occupation
- Licensed Electrician
Found it.
captainwireman
Senior Member
- Location
- USA, mostly.
You are the man! Hey, thank you kindly sir. :thumbsup:
RMC IS the way to go..
all home runs do not have to be in EMT or MC. If you use the exceptions listed in 210.12 in must be installed in EMT or the other listed wiring methods
Last edited:
210.12 Arc-Fault Circuit-Interrupter
Protection
(A) Dwelling Units. All 120-volt, single phase, 15- and
20-ampere branch circuits supplying outlets installed in
dwelling unit family rooms, dining rooms, living rooms,
parlors, libraries, dens, bedrooms, sunrooms, recreation
rooms, closets, hallways, or similar rooms or areas shall be
protected by a listed arc-fault circuit interrupter, combina-
tion-type, installed to provide protection of the branch cir-
cuit.
Exception No. 1: If RMC, IMC, EMT, Type MC, or steel ar-
mored Type AC cables meeting the requirements of 250.118
and metal outlet and junction boxes are installed for the
portion of the branch circuit between the branch-circuit
overcurrent device and the first outlet, it shall be permitted
to install an outlet branch-circuit type AFCI at the first out-
let to provide protection for the remaining portion of the
branch circuit.
Exception No. 2: Where a listed metal or nonmetallic con-
duit or tubing is encased in not less than 50 mm (2 in.) of
concrete for the portion of the branch circuit between the
branch-circuit overcurrent device and the first outlet, it shall
be permitted to install an outlet branch-circuit type AFCI at
the first outlet to provide protection for the remaining por-
tion of the branch circuit.
Exception No. 3: Where
Protection
(A) Dwelling Units. All 120-volt, single phase, 15- and
20-ampere branch circuits supplying outlets installed in
dwelling unit family rooms, dining rooms, living rooms,
parlors, libraries, dens, bedrooms, sunrooms, recreation
rooms, closets, hallways, or similar rooms or areas shall be
protected by a listed arc-fault circuit interrupter, combina-
tion-type, installed to provide protection of the branch cir-
cuit.
Exception No. 1: If RMC, IMC, EMT, Type MC, or steel ar-
mored Type AC cables meeting the requirements of 250.118
and metal outlet and junction boxes are installed for the
portion of the branch circuit between the branch-circuit
overcurrent device and the first outlet, it shall be permitted
to install an outlet branch-circuit type AFCI at the first out-
let to provide protection for the remaining portion of the
branch circuit.
Exception No. 2: Where a listed metal or nonmetallic con-
duit or tubing is encased in not less than 50 mm (2 in.) of
concrete for the portion of the branch circuit between the
branch-circuit overcurrent device and the first outlet, it shall
be permitted to install an outlet branch-circuit type AFCI at
the first outlet to provide protection for the remaining por-
tion of the branch circuit.
Exception No. 3: Where
- Status