Wiring For Detached Metal Bldg - Electrical - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 06-23-2011, 05:06 PM   #1
Newbie
 
Join Date: Jun 2011
Location: Louisiana
Posts: 4
Rewards Points: 10
Default

Wiring for Detached Metal Bldg


My father in law had a metal shop built. Metal framework and sheet metal roof and sides. Now he wants me to help him run electricity to it. They did not install a ground rod through the slab, but did stub up for electrical conduit. Here is my thoughts and let me know if this is correct. Connect 6/3 UF wire to 60 amp double pole breaker in the house breaker panel. Run in PVC conduit underground to new breaker panel. Remove bonding screw. Install grounding rods outside of Bldg. Connect wire from Ground rod to Ground buss. There will be no other lines connecting the buildings.

Here's my questions. Does the Ground wire to the rod needs to insulated or not? If I leave it uninsulated it will it bond the building to the ground. Should I install the service panel on 2x4's or can it touch the metal studs? I plan on using metal junction boxes and rec. boxes, Is there any special attention needed for those?

Advertisement

splittoe is offline   Reply With Quote
Old 06-23-2011, 05:47 PM   #2
Licensed electrician
 
Join Date: Sep 2007
Location: Maryland
Posts: 8,034
Rewards Points: 2,866
Default

Wiring for Detached Metal Bldg


You could sleeve the UF where it enters and exits the ground. There is no need for UF to be in conduit unless to protect from physical damage. Individual conductors in conduit is much easier.

Yes you will need a ground rod at the outbuilding. The grounding conductor does not need to be insulated.

Advertisement

__________________
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
Jim Port is online now   Reply With Quote
Old 06-23-2011, 05:56 PM   #3
Newbie
 
Join Date: Jun 2011
Location: Louisiana
Posts: 4
Rewards Points: 10
Default

Wiring for Detached Metal Bldg


Yeah I forgot about THWN wire. What size will the ground need be in the conduit?
splittoe is offline   Reply With Quote
Old 06-23-2011, 08:29 PM   #4
Electrician
 
SD515's Avatar
 
Join Date: Aug 2008
Location: Near Jackson Michigan Area
Posts: 1,451
Rewards Points: 502
Default

Wiring for Detached Metal Bldg


At least #10 copper, green or bare. I don't like pulling bare wire in conduit, but #10 isn't that bad for a short run.
__________________
Kyle

Just because you can, doesn't always mean you should
SD515 is offline   Reply With Quote
Old 06-24-2011, 08:55 AM   #5
Newbie
 
Join Date: Jun 2011
Location: Louisiana
Posts: 4
Rewards Points: 10
Default

Wiring for Detached Metal Bldg


Will I still need to ground the metal boxes, if I'm screwing it to metal studs? What about the breaker panel can it be mounted to the metal studs or does it matter?
splittoe is offline   Reply With Quote
Old 06-24-2011, 12:50 PM   #6
Member
 
Join Date: Jun 2007
Posts: 3,510
Rewards Points: 2,008
Default

Wiring for Detached Metal Bldg


Quote:
Originally Posted by splittoe View Post
Will I still need to ground the metal boxes, if I'm screwing it to metal studs? What about the breaker panel can it be mounted to the metal studs or does it matter?
Yes. You need a pig tail from the metal box to the receptacle. Screwing the panel to the metal studs is fine. However, I would use a back board. This way you have a way to secure the conduits or cables as they leave the panel.
J. V. is offline   Reply With Quote
Old 06-30-2011, 12:17 PM   #7
Newbie
 
Join Date: Jun 2011
Location: Louisiana
Posts: 4
Rewards Points: 10
Default

Wiring for Detached Metal Bldg


So will it be ok installing the panel to the metal framework of the building? Or does it need to be framed out with 2x4's?
splittoe is offline   Reply With Quote
Old 07-14-2011, 09:17 AM   #8
Member
 
Join Date: Jan 2009
Location: roanoke, texas
Posts: 197
Rewards Points: 180
Default

Wiring for Detached Metal Bldg


does the exposed pipe to the outlet box need to be schd 40 or emt?
kt82 is offline   Reply With Quote
Old 07-14-2011, 06:39 PM   #9
Electrician
 
SD515's Avatar
 
Join Date: Aug 2008
Location: Near Jackson Michigan Area
Posts: 1,451
Rewards Points: 502
Default

Wiring for Detached Metal Bldg


???

Please explain more about what you are doing.
__________________
Kyle

Just because you can, doesn't always mean you should
SD515 is offline   Reply With Quote
Old 07-14-2011, 11:35 PM   #10
Member
 
Missouri Bound's Avatar
 
Join Date: Apr 2011
Location: Almost Arkansas
Posts: 2,764
Rewards Points: 2,000
Default

Wiring for Detached Metal Bldg


You will need 4 wires from the main panel as you must pull a ground as well with the circuit. And in the sub panel you will need to isolate the neutral buss from the panel, and bond the grounding buss to the panel. And the grounds and the neutrals need to land on their respective buss. The length of the run will determine the circuits wiring size at any given ampere rating.
Missouri Bound is offline   Reply With Quote
Old 07-15-2011, 02:22 AM   #11
Member
 
Join Date: Jul 2011
Location: Saskatoon
Posts: 30
Rewards Points: 25
Default

Wiring for Detached Metal Bldg


Does a subpanel pull only how ever many amps are available from the single slot?

Advertisement


Last edited by design_lover13; 07-15-2011 at 02:32 AM.
design_lover13 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
unsafe wiring to shed? lawsklsux Electrical 7 11-14-2010 01:16 PM
Unusual three way switch wiring help r1racer Electrical 9 11-11-2010 09:49 PM
electric wiring in house remodel wis_remod Electrical 6 04-02-2009 03:40 PM
Knob & Tube wiring - How concerned should we be? hotdiggitydog Electrical 6 04-11-2006 08:52 PM
Garage - Protecting wiring installation eastment Electrical 4 11-26-2005 12:52 PM




Top of Page | View New Posts