I am planting a tree, how deep can I dig?

​State law requires having underground lines located before digging 16 inches or deeper. Anyone preparing to do excavation work to dig around buried service wires would need to contact Texas’ underground service wires locator service by calling 8-1-1. It is necessary to contact them at least 48 hours in advance of digging to request service wires be located.Typically, underground power lines are buried in a trench 24 inches deep when installed, measured from the top of the conduit or service wire to the top of the trench. This is usually a 120/240-volt service for a residential or small commercial consumer. For a large commercial or an industrial consumer, wires are normally buried in a trench 30 to 36 inches deep when installed, measured from the top of the conduit or service wire to the top of the trench.Due to subsequent changes in grade and or erosion, service wires may not be as deep as when they were installed. Always err on the side of caution by calling 8-1-1 before digging.-David R., Oncor Distribution Expert

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