The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Parking lot pole light swap....
by gfretwell
10/24/16 08:46 PM
International Wire Colour Codes
by Tjia1981
10/23/16 12:08 PM
Son of Sparky
by HotLine1
10/20/16 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 14
HotLine1 7
ghost307 7
renosteinke 6
Potseal 4
Who's Online
0 registered (), 338 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#5938 - 12/15/01 07:10 AM burial depth for branch line?
bayala13 Offline
Junior Member

Registered: 12/15/01
Posts: 2
Loc: ia
Does anyone know the underground depth required by NEC for branch line? It is about a 100' run to a pole building 100 amp service. 220v...? thanks

Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#5939 - 12/15/01 07:32 AM Re: burial depth for branch line?
Jim M Offline

Registered: 08/10/01
Posts: 453
Loc: Chestertown, MD, USA
You would need to provide the following info: voltage, what is it being buried under, wiring method etc.

#5940 - 12/15/01 11:27 AM Re: burial depth for branch line?
George Corron Offline

Registered: 05/16/01
Posts: 728
Loc: Lorton, Va USA
Your burial depth does depend on if you're using conduit, or direct burial cable. The answer comes from Table 300-5. Assuming we are NOT going under a street, roadway, driveway but merely across a yard. Rigid conduit = 6", direct bury cable = 24", UF = 18". If your conditions are different, let us know.


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals