I did this as a DIY twice. My DIY were on new build to barn and house, not retro-fit.
Just did it a third time, but this time I hired it done for a recent new build.
On the most recent new build, I was able to install a spare 1" conduit to my entrance along with conduit for my internet all in the one deep trench.
Some key points:
1. You are responsible for installing buried conduit from pole to house.
- Utility has specifications on how deep they want it. I think mine was 42".
- Utility will want to inspect depth of installed conduit prior to covering. IF you're hiring it done, they may trust a reputable electrical firm along with a photo, but don't count on it.
-Utility will want "marker" tape installed as a warning barrier in trench- they provide it.
-You are responsible for 811 marking all buried commodities. You are still responsible for damage if you hit one so be prepared to hand dig.
2. Utility will mount conduit on power pole up to transformer. I just had to stub it out of the ground at the pole.
3. Utility will pull and connect wire from transformer to house meter.
4. Meter-Can had to be within 100 feet of transformer. So this may have been "waved" on initial over-head install, may not be acceptable if you want to install new underground cabling.
Also, the distance down the pole will add some length to the run. Check with CenterPoint before starting your project, they'll have an installation fact sheet for you to follow.
Have fun, buried wires underground are much safer, that's why I went to the trouble, don't have to worry about snagging them with pecan shakers, and other farm equipment.
