ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Do we need grounding?
by gfretwell - 04/06/24 08:32 PM
UL 508A SPACING
by tortuga - 03/30/24 07:39 PM
Increasing demand factors in residential
by tortuga - 03/28/24 05:57 PM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
0 members (), 376 guests, and 7 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#79752 01/17/02 12:39 PM
Joined: May 2001
Posts: 129
F
frodo Offline OP
Member
hi,
i am looking at doing three buildings at three different coal mines. the building will b some kingd of lab. just lights and recepts.

i am trying to decide whether to use EMT, ENT, BX, or MC for these buildings..

the area is not classified.

anything else i should consider?

-regards

frodo

Stay up to Code with the Latest NEC:


>> 2023 NEC & Related Reference & Exam Prep
2023 NEC & Related Reference & Study Guides

Pass Your Exam the FIRST TIME with the Latest NEC & Exam Prep

>> 2020 NEC & Related Reference & Study Guides
 

#79753 01/17/02 06:06 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
You can forget the BX unless you get the kind with an equipment grounding conductor in it, the Fed's will require this.

I usually use MC for concealed work & EMT (with an equipment ground pulled in) for exposed work.

I'd say forget the ENT, knowing how mine inspectors think, they probably wouldn't care to see it.

For circuits up to #6 AWG, your equipment ground must be sized 100% of the hot conductor, #4 & up it must be at least 50% of the hot conductor. This could be a problem if you tried to run any cable larger than #10, since the equipment ground will be too small.

What state will this be in?

Tom


Few things are harder to put up with than the annoyance of a good example.
#79754 01/17/02 10:19 PM
Joined: May 2001
Posts: 129
F
frodo Offline OP
Member
hi,
thanks for the reply. two of the labs is in southern indiana and the other is in kentucky.

in a drop in cieling then just using flex would be adequate for the light fixtures, and run emt everywhere else?

ent would probably scare even those mine guys!

-regards

frodo

#79755 01/18/02 09:52 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
Yeah, they understand flex. The biggest thing, as I pointed out, is to have an equipment ground in every raceway.

I'll be doing a Bath House & motor Barn in Mossy, WV, probably next month. The Bath House is portable, being built about 6 miles from where I live & we'll ship it on flatbeds. The motor barn will be built on site.

I've been to Inez, Kentucky a few times, thats about as far from Indianna as you can get & still be in Kentucky.

Toim

[This message has been edited by Tom (edited 01-18-2002).]


Few things are harder to put up with than the annoyance of a good example.

Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5