Undergrounding can be risky due to the presence of underground obstacles or other utility lines like gas water or telecommunication lines.
Burying electrical lines.
Underground power lines would not prevent outages caused by damage to high voltage lines or towers.
How deep is a power line buried.
Electrical wire encased in pvc conduit.
At 6 in deep use galvanized metal rigid electrical conduit 1 2 in.
The conductors need to be waterproof so look for a w on the label as in thwn 2.
Is large enough for the water feature and run individual conductors inside.
Bury in the ground.
This method lets you run any size circuit.
The national electric code nec sets the required burial depth of electric wire in rigid non metallic conduit such as pvc at 18 inches.
According to this cnn article it can cost upwards of 1 million per mile but the geography or population density can halve this cost or even triple it.
Cable in any conduit including pvc that is buried at this depth is not in danger of being severed or disturbed by normal digging.
From determining how many volts and amps that a shed needs to knowing whether the existing electrical service can provide that to digging a code compliant trench for conduit powering an outbuilding is probably a job for a pro.
Steps to run power to a shed.
Installing additional electrical circuits or wiring should be done according to local and national electrical codes with a permit and be inspected.
Electrical parts and materials for all electrical projects should be approved for the specific project and compliant with local and national electrical codes.
In this video this old house s electrician scott caron shows us how he does the job.
Electrical codes and inspections.
When you run buried electrical cable for example from a house to a garage or to a gazebo it has to be protected to prevent mechanical damage to the insulation.
Burying power lines for a city is a whole another story.
For example some projects use a depth of 6 inches when the line is encased in half inch gauge metal conduit with waterproof conductors.
Direct bury underground feeder uf b line can be buried at a depth of 12 inches if it meets certain criteria.
For those still thinking it s.
The national electrical code gives minimum burial depth recommendations and building codes specify local requirements that you must follow.
Electrical lines may be buried at other depths as well.
Luckily all fifty states.