I was told by a plumber who was told by another electrician that you can not use bx or mc when wiring a boiler, gas or oil. I have been wiring boilers for years using bx or mc. He said your supposed to use greenfield with thhn. but i thought thhn is already in the bx/mc, so why do twice the work. He said he thinks it has to do with temp. rating on the conductors.Is there any codes or information out there for wiring boilers gas or oil?
gas burner wiring
- Thread starter rknrll813
- Start date
- Status
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
Ask the plumber to go back to the electrician and ask him for a code section that applies to his comment.
Otherwise, I would read the installation instructions to see what they may prohibit or allow.
Otherwise, I would read the installation instructions to see what they may prohibit or allow.
peter d
Senior Member
- Location
- New England
The other electrician who told this plumber is misinformed.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Sounds like you have a few guys who are misinformed. Boilers have been wired for 50 years with AC cable, maybe longer.
ceb58
Senior Member
- Location
- Raeford, NC
Your first mistake was believing a plumber. The other elect. was probably tought to wire them with greenfield and he has blindly accepted this as code. I have a boss who will not accept greenfield or carflex on indoor installations. It must be liquid tight, that other stuff is not worth having. OK, what ever, your the one throwing money away
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
Hey.
I am both a lic. plumber and a lic. electrician. Who should I believe?
When my plumber is wrong I ask my electrical inspector (me).
When my electrician is wrong I ask my plumbing inspector (me).
At least I am always right!
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Good thing your not also lic. for mechanical, or you could be arguing yourself into the nut house.
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
Good thing your not also lic. for mechanical, or you could be arguing yourself into the nut house.
Wayne
No just certified to do so.
ceb58
Senior Member
- Location
- Raeford, NC
But when deciding hot on left do you get the hot water and the ungrounded conductor confused?
mjf
Senior Member
local code??
local code??
Concerning the OP, the only thing to check would be if there is a local code in effect.
local code??
Concerning the OP, the only thing to check would be if there is a local code in effect.
Jim W in Tampa
Senior Member
- Location
- Tampa Florida
And this is your fault. We can work an ID 10 T
Johnmcca
Senior Member
- Location
- Mid-Hudson Valley, NY
Can you or your plumber cite a code reference prohibiting MC AC or BX?
Jim W in Tampa
Senior Member
- Location
- Tampa Florida
90 % Only know friday is pay daY, KNOW ALMOST NOTHING ABOUT PLUMBING, and you want what ?
Johnmcca
Senior Member
- Location
- Mid-Hudson Valley, NY
My brother-in-law is a plumber, I already know what they know (or don't know) about the mysterious movements of electrons.:grin:
peter d
Senior Member
- Location
- New England
In defense of the plumber, the OP did say the plumber was passing along information he got from an electrician. Let's not kill the messenger.
Johnmcca
Senior Member
- Location
- Mid-Hudson Valley, NY
Personally I wouldn't take anything a plumber told me about about electrical connections seriously. I have a long record of them being horribly wrong about electricty, and only a little better about plumbing.
iMuse97
Senior Member
- Location
- Chicagoland
don't like your brother-in-law so much?? Anyway, to OP, the plumber reported a mistaken idea that the electrician had (unless, as mentioned, there is some local restriction).
Anyway, to OP, the plumber reported a mistaken idea that the electrician had (unless, as mentioned, there is some local restriction).
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
No the ungrounded conductor on the left also. Thats why the EGC should be on top on a recp. LOL
kbsparky
Senior Member
- Location
- Delmarva, USA
Maybe that particular electrician wanted to sell more expensive jobs, justified by the "requirement" to utilize conduit instead of AC or MC cable?
Or, it could have been that the only jobs he did were using Gov't specs that called for more expensive wiring methods?
I've never had any problems in using type AC or MC cable when wiring boiler systems.
Or, it could have been that the only jobs he did were using Gov't specs that called for more expensive wiring methods?
I've never had any problems in using type AC or MC cable when wiring boiler systems.
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
The only think that I could find do far is from the mechanical code:
"304.2 Conflicts.
Where conflicts between this code and the conditions of listing or the manufacturer?s installation instructions occur, the provisions of this code shall apply.
Exception: Where a code provision is less restrictive than the conditions of the listing of the equipment or appliance or the manufacturer?s installation instructions, the conditions of the listing and the manufacturer?s installation instructions shall apply."
From: http://www.peerlessboilers.com/Prod...9/tabid/204/Default.aspx#dnn_relateddocuments
"This appliance is to be wired in accordance with local
codes and regulations as defined by the Authority having
jurisdiction. In the absence of such local codes, the
PUREFIRE boiler is to be wired in accordance with the latest
edition of the National Electrical Code, ANSI/NFPA 70."
- Status