Depth of conduit for phone lines

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aftershock

aftershock

Senior Member
Location
Memphis, TN
2" PVC for a phone line. A boring company has ran the 2" just 10' shy of the pole on the street. What is my depth needing to be. I ask this because I dont want to hit anything trying to dig too deep.
 
If your under the street it would be 24" to the top as per T300.5, 18" under sod. These are for 'Nonmetallic Raceways Listed for Direct Burial'. (empty conduit)

Now put your phone wire in it appears the is no depth requirement as per 800.3.

EDIT: If it will be utility owned wire, I'm sure they have specs.
 
chris kennedy said:
If your under the street it would be 24" to the top as per T300.5, 18" under sod. These are for 'Nonmetallic Raceways Listed for Direct Burial'. (empty conduit)

Now put your phone wire in it appears the is no depth requirement as per 800.3.
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Right. It's interesting that a conduit has burial depths, but use it for low voltage, and you can cover it with a piece of notebook paper if you want to.
 
See Table 300.5, and more importantly you local "Joint trench rules" which may have information about approach to poles. That said - "call before you dig!" Google those words and you may come up with the right number in your area to call...
 
mdshunk said:
Right. It's interesting that a conduit has burial depths, but use it for low voltage, and you can cover it with a piece of notebook paper if you want to.
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Most telco's have min depths for public areas.... ~18" min, but some will require 2-3' sweeps as well.
 
e57 said:
See Table 300.5, and more importantly you local "Joint trench rules" which may have information about approach to poles. That said - "call before you dig!" Google those words and you may come up with the right number in your area to call...
Click to expand...

We have marks showing primary line and what I think is cable. The primary is of no concern,, but the cable shows to be in our path.
 
OK - you'll want to be at 24"+, as you'll most often be required to use a 24" radius 90 to come up next to the pole. Using one of those means you also don't have to dig very deep right next to the pole.
 
Since you don't list a location in your profile - know one knows which state or telco you are dealing with, but many would require you to do this a certain way. Around here this would mean a 24" x 90, and would put you below 24". Although the min for telco is actually 18". And often they want a pull box for drainage ~5' from the pole.
 
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