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Advice on trench depth for SWA - Answered!

MikeD

I'm planning to build a timber garden room for use as an amateur radio shack. It will have a TT mains supply from the house consumer unit. I can't attach the SWA to a fence as the boundary belongs to the neighbour so it will have to go underground.

The trench will be about 5 metres long under a gravel walkway and will cross a sewer pipe that is 600mm below the surface with an inspection cover nearby. How deep does the trench need to be?

Mike

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    Thanks Mike. I'm not planning to move house for many years, and will obviously create a cable plan for the next owner, but ultimately it will be down to the person who certifies the work to be satisfied it is safe for the uninitiated. I'm planning to run the SWA in a straight line between junction boxes on the walls of the house and garden room. These will only be 5 metres apart and presumably carry warning stickers so it should be “obvious”, but you never know! Paving slabs over the top sound like the easiest and best solution.

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    Thanks Mike. I'm not planning to move house for many years, and will obviously create a cable plan for the next owner, but ultimately it will be down to the person who certifies the work to be satisfied it is safe for the uninitiated. I'm planning to run the SWA in a straight line between junction boxes on the walls of the house and garden room. These will only be 5 metres apart and presumably carry warning stickers so it should be “obvious”, but you never know! Paving slabs over the top sound like the easiest and best solution.

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