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SWA into underground ducting - how to weatherproof/deal with the connection?

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Haighy

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Hi,
I've an SWA power cable being routed through the brick wall of my house, along a few meters, and then into some HDPE 50mm conduit underground which comes up through a concrete slab inside my workshop. I assume others have something similar, so, what have you done about weatherproofing the external conduit entry with the SWA? Did you put it in a meter/junction box, or something else?

Thanks,
Andrew
 

siggy_7

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I would fit a junction box, which I think is the standard practice for this. Normal twin+earth comes from the house through your wall into the back of the junction box; the SWA enters the junction box through a sealed gland. Junction boxes are like this:

Whilst the gland kits look like this:

The gland kits come in different sizes depending on the cable you are fitting:
 

Haighy

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I thought it was something like that but wasnt sure exactly which bits to use. Will organise that with the electrician today.

Thanks,
Andrew
 

flying haggis

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is the conduit from house to shed higher at the house end so could provide a path for water to get into the shed? if possible i would keep the swa intact for as long a run as possible ie avoid joins. does the swa connect directly to your consumer unit in the house, if so there is no need to use twin and earth and a junction box. i would simply fill the top of the conduit where the swa enters with a good quality silicone sealant to stop water/insect ingress. if you havent run the swa yet your electrician will probably have a "boot" from a glanding kit that could fit round the cable and over the end of the conduit
 
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