dcsimg
Self Help Forums

Go Back   Self Help Forums > Building > Building Codes - Residential
Register FAQ Members List Calendar Today's Posts

Building Codes - Residential International Residential Code 2000 or 2003

Reply
 
Thread Tools Display Modes
  #1   IP: 68.79.115.1
Old February 8th, 2005, 09:47 AM
toddupton toddupton is offline
Junior Member
 
Join Date: Feb 2005
Posts: 1
Default Wiring pole barn

I am just getting started wiring my new pole barn. The barn is 225 feet from my house. Now can someone let me know if the following would work.
60 am service to the barn-
long run so I plan on using 4awg in 2 inch pvc
The ground I should be able to get away with an 8awg running back to the panel and to 2 ground rods at the barn
The neutral will also have to be a 4awg also?
Not bonding the subpanel.
Does all of this sound correct?
Reply With Quote
  #2   IP: 130.76.32.145
Old February 8th, 2005, 12:58 PM
suemarkp suemarkp is offline
Super Moderator

 
Join Date: Dec 2003
Location: Kent, WA
Posts: 8,261
Default

How many amps do you really think you'll need in that barn? If its less than 40, then what you propose should be fine (and I'd consider a 40A breaker at the house to enforce it). But if you'll be pushing 50 amps or more, then you need to upsize the wire to stay within a 3% voltage drop.

If you know you have some 240V only loads, then the neutral can be downsized, but I wouldn't go down more than 1 size). Since you're already upsizing for voltage drop, I don't think you'll ever have an ampacity problem on the neutral just maybe excessive voltage drop depending on how well you balance things.

If you can get a discount for buying a whole spool of wire (and you can at Lowes and Home Depot), I'd suggest getting 500' of #2 copper and 500' of #4 copper. Use the #2 for the two ungrounded power feeds and the #4 for neutral and ground. Or you could go aluminum in #1/0 and #2 which may be substantially cheaper and easier to lift too. You could even buy URD wire and skip the conduit. But if you can afford it, using a conduit and THWN conductors is a nicer install as it allows for change/replacement.

The barn is far enough from the house that you may want to consider a 3 wire feeder instead of 4 wires (it will save the cost of 1 wire, and you'll need to bond the panel to neutral). But you can't if you have any metal pipes or other grounded metal wires (phone, TV) to that barn from the serving structure.
__________________
Mark
Kent, WA
Reply With Quote
  #3   IP: 24.16.225.236
Old February 9th, 2005, 08:15 PM
suemarkp suemarkp is offline
Super Moderator

 
Join Date: Dec 2003
Location: Kent, WA
Posts: 8,261
Default

Post didn't update.
__________________
Mark
Kent, WA
Reply With Quote
  #4   IP: 4.242.66.111
Old March 16th, 2005, 09:04 PM
Unregistered
 
Posts: n/a
Smile

Quote:
Originally Posted by suemarkp

The barn is far enough from the house that you may want to consider a 3 wire feeder instead of 4 wires (it will save the cost of 1 wire, and you'll need to bond the panel to neutral). But you can't if you have any metal pipes or other grounded metal wires (phone, TV) to that barn from the serving structure.
Unless he's in the State of Washington, WAC 296-46-250 requires that you need to run the 4th wire (ground) and float the neutral in the panel when feeding any out building with a feeder.
Reply With Quote
Reply






Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wiring barn from garage. Confused on feeder wire. LOSTintheSAUCE Electrical - Existing Home 1 September 19th, 2011 09:28 PM
Need Help With Electric To Pole Barn jbrunolinton Electrical Code - USA 6 May 20th, 2008 05:24 AM
pole barn sub panel erict Electrical Code - USA 4 November 20th, 2005 01:48 PM
CAT5e Computer Wiring *abarry Computers & Data Wiring 1 December 11th, 2003 11:20 AM
Question from email transferred to forum by Wg Wgoodrich Electrical - Existing Home 1 November 1st, 2002 03:52 PM


All times are GMT -4. The time now is 04:22 PM.


Powered by vBulletin® Version 3.6.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
© 2002 - QuinStreet, Inc.
http://www.selfhelpforums.com