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Downstairs Toilet Light Trips When Light Switched off

Postby Plucky » Fri Feb 16, 2018 8:44 am

Morning All,

I have a downstairs toilet with a single light, I have replaced the rose and switch. When i turn the light off it trips the fuse board. Please see diagram below. The Ceiling rose has 3 of each wire chaining to the rest downstairs i believe.

First time poster!

Thanks in advance
toliet light.JPG
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Simply Build It

Postby Mr White » Fri Feb 16, 2018 7:07 pm

You have wired the switch across live and neutral, so when you turn the switch off it puts a dead short across L & N so the MCB does its job.
Mr White
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