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Topic: Burying an Electric Cable

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clbewi

17/1/2016 at 4:16pm
Location: Essex
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Hello All,
We are having a concrete patio laid and we want two lamp posts bolted down on it. My question is what would you use to protect the cable under the concrete. I was thinking using plastic conduit just in case I need to replace the cable at anytime.
Do you think this is suitable or would the lime in the concrete attack the plastic?
Open to suggestions.

Colin

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Claire and Colin

JuanHuNose

17/1/2016 at 4:50pm
Location: None Entered
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I`d do exactly the same. Nothing in cement that will affect the plastic.

saxo1

17/1/2016 at 4:58pm
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Any new electrical work in the garden is subject to Part P building regs and does require certification.
saxo1

Rustybus

17/1/2016 at 5:02pm
Location: East Woodhay
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I believe steel armoured cable must be used, even buried under concrete

Fiona W

17/1/2016 at 5:02pm
Location: Ayrshire
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You're having the patio laid. Just tell the builder what you want. He'll problably lay the cable in the bottoming under the concrete and just bring it up where you want your lights.

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GCMS2012

17/1/2016 at 5:17pm
Location: Northumberland
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Lay conduit.....

'Cause as always, you'll want to change / alter / add something in the future....

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Damned if I do...

Damned if I don't!!!!

saxo1

17/1/2016 at 5:30pm
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It can be SWA, Concentric PVC or any suitable cable laid in protective ducting that affords the same level of protection as armoured cable (twin wall cable ducting)
Marker tape must be laid above it to identify it (yellow marked "buried electric cable below"or words to that effect).
It must be RCD protected.
saxo1

LobeyDosser

17/1/2016 at 9:32pm
Location: Argyll Scotland
Outfit: 1997 Bailey Ranger 470 4

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I recently laid 2 exterior cables, one to my shed/workshop and the other to my greenhouse.

Both were laid using armoured core cable but where they ran under concrete paths, I placed them inside 2 inch plastic pipe. Not so much for protection but more in case at any time in the future, I wanted to replace or add to the cabling and I wouldn't have to dig up the paths again.

Although I wired both the Greenhouse and the Shed I got a registered electrician to instate the cabling at each of the ends and check out my wiring.

Don't cut corners where exterior wiring is concerned and Armour Cored Cable is fairly inexpensive.

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Lobey.

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