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DIY Electrical Service trenching and conduit Installation

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DIY Electrical Service trenching and conduit Installation

I will be digging the trenches and installing conduit for underground power lines to be installed to a single family house. We are going to have to trench threw a easement in order to install the conduit from the Green power box across the street to the new home location.
I will be covering the importance of calling 811″ call before you dig” and also very briefly showing what can happen, when the markings on the ground aren’t marked correctly.
Underground power started more than 50 years ago to replace overhead distribution systems. Underground service installations by the power industry is complex. However it can be done and has a lot of great benefits. Lack of interest on the part of the power company should not deter you from taking advantage of the benefits of buried distribution systems.
When the estimated cost of buried services exceeds the estimated cost of aerial services by more than ten per cent, you should negotiate with the power district or developer on the following basis:
No charge where the developer, builderor, or you dig and backfills trenches for the distribution cable and all service wires.
where you digs and backfills all trenches, the developer or builder will pay that cost which exceeds the estimated cost of aerial plant by more than ten percent.
I recommend that underground power systems be used exclusively. There are certain instances where it is not feasible however theses are very rare.

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  2. two things i'd do different is to put warning tape over the tubes and clean the ditch up a bit and not letting small and large stones touch the tubes so it doesn't damage them long term.

  3. Reminds me of way back in the 90s, I bought a property in Michigan with no well or septic. My dad helped me as well… showed me how to find water using a pair of 90 degree bent clothes hanger wires holding loosely in each hand and ad we walked over water, the tips would begin to point together.

  7. Tip from an EC: when you're crossing a marked line ( 811 notification paint ) FIND that trench, find that pipe. After the top soil is pulled back — you're looking for the disturbed soil ( if spottable ) where the old trench was. In California, our soils are so tough that old trenches really show up — after the top has been stripped back. There is a nifty tool used — it's a stiff nylon coated probe with a T handle on its top. You must keep probing until you find the actual pipe — and its trench — because you want to know with certainty that the water pipe// any crossing pipe is truly found. As a general rule, you want to trench SHALLOW until all crossing trenches are revealed. Note that an old trench will usually not have the level of compaction seen in the native soil. It will give way to the T probe. That's how you know you're dialing into an old, semi-compacted trench. 

    This method is slower than just hacking ahead, but the cost of hitting a pipe is just too much to bear.

    Lastly, don't assume that the 811 dowser found all of the crossing pipes. His records may be sloppy. So he'll find one pipe, one trench — but yet there is another just a few feet away. The typical instruments will not reveal such a proximate parallel or semi-parallel trench. Remember, you'r hunting for trenches — even more than hunting for pipes. That's what the probing is all about. For myself, I'd always dump such projects onto an insured contractor. My days of jumping into a trench are over.

  8. I feel for you brother been digging mainline for 20 years if any operator say they never ripped anything out they aren't a hoe hand. FYI learn to use witching rods and learn from every dig. I dig down the city streets up to 40 feet deep around Gas, comm, sewers, water, and God know what else. Even doing little residential digs like you can be a challenge for the seasoned vets.Just always learn from your digs. Witching rods and a good metal detector will be worth the time.

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