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No Earth in light switch

Postby Lawrence » Sun May 27, 2007 4:18 pm

I've been putting up a surface mounted light switch using a standard plastic back box. As there's nowhere to fix the earth from the switch wire presmably you just put some green/yellow sleeving on it and leave in the box?

When you do the radial circuit continuity and insulation tests doesn't this give odd results?
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Postby pdenni » Sun May 27, 2007 6:43 pm


yes you are correct you sleeve the earth and put it an a connector block, it doesn't have any impact on test results.
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Postby Jeffmo » Sun May 27, 2007 7:24 pm

hi , if there is an earth connection in the pattress ( box) then use that , if not just sleeving it is not good , so fit with connector block after sleeving ofcourse. Cheers Jeff
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Postby sparx » Sun May 27, 2007 8:35 pm

Hi Lawrence, about right but if room put small term block on to make sure not able to touch conn.
No prob with any testing as it's only a 'tee' off main circuit, so continuity will go through light to light, and I.R. tests won't be affected either as long as kept away from other wires as I said ,
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