>However, when my pool was built, both the propane guy and the
>electician ran their lines only about 6 inches down. When I
>inquired about that, they both gave the same answer: it's not required
>by code.
>73 Barry
I'm not an electrician, but I've uncovered the following NEC codes for
minimum cover over a trench (for electrical service):
Location UF cable Rigid Metal PVC GFCI 20 amp 30volts
circuit
General 24" 6" 18" 12" 6"
Below 2" of
concrete 18" 6" 12" 6" 6"
Under building n/a 0 0 n/a n/a
Under min. 4"
slab no
vehicles 18" 4" 4" 6" 6"
Driveway 18" 18" 18" 18" 18"
The reason for this minimum cover is to protect the electrical cable.
It is not to prevent heaving.
The reason for burring the ground conductor is not to prevent heaving,
but to increase conductivity.
---
Chad Kurszewski, WE9V e-mail: Chad_Kurszewski@csg.mot.com
The Official "Sultans of Shwing" Web Site: http://www.QTH.com/sos
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