NEC requirements for buried wiring vary depending upon amperage of the
circuit, type of conduit, type of protection, such as ground fault, and
direct buried cables. It also varies depending where the trench is, such as
under a driveway, road, etc. etc. Personally, in a residential application I
like to sleeve U.F. cable through PVC pipe or flexible non metallic conduit,
for added protection. More protection is obviously better. In your
situation, at the very least I'd install GFCI protection on the circuit




"Amy L" wrote in message
...
I am installing a lamp post in my front yard. I already have electrical
ran to the outside that was used for a lamp post many years ago (previous
owners). They ran the cable not in conduit underground about 6 inches at
most. I am going to put a new lamp post in and I was thinking that the
electrical cable should be in a conduit. The existing cable is underground
rated (or so it says on it). Thoughts on the conduit. Also, in the trench
would you lay gravel or sand? Any general advise anyone can offer? Tips,
tricks, or advise from experience?

Thanks
Amy.