Underground Power and Cable Trenching

Running power to a detached structure is the classic two-contractor job. A trenching contractor opens the ground, then an electrician comes back to lay cable and connect it — and the two never quite line up, so the trench sits open across your yard for a fortnight.

We do both. The same crew brings the machine, digs to the required depth, lays correctly sized conduit with a draw wire and marker tape, pulls the sub-main, backfills and compacts, and then terminates and certifies the circuit at both ends. One quote, one booking, one warranty.

Sizing matters more than people expect. A long underground run has real voltage drop, so the cable has to be sized for the distance and the load rather than for what would be fine inside the house. We also size the conduit for future capacity, because pulling a second cable later is trivial if the conduit is there and expensive if it is not.

Common jobs: power and lighting to a shed or workshop, supply to a granny flat with its own sub-board, EV chargers at a detached garage, pool and spa circuits, garden and yard lighting, and commercial car park lighting and bollards. For the wider trenching offering see underground power and trenching.