View the thread, titled "Neutral is LIve?!" which is posted in Electrical Wiring, Theories and Regulations on Electricians Forums.

went back today to find several problems.
they had indeed just had their board changed had wasn't fully tested.
i found N-E fault on to landing sockets, so when something was being pluged in and switched on, trip goes the rcd.(someone had changed the sockets to chrome ones(and didnt do a good job of it):rolleyes:
also found a socket in the loft tapped off the upstairs lighting circuit with a table lamp pluged in wired wrong causing the 230v on the neutral.
I took the socket out,removed the 1.5 t+e feeding it and wired in new light in loft from upstairs lights. all is good now.thanks for you kind help guys:)

although i was right with my first thoughts:p;)
 
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Is it T-N-S or TN-C-S check the Ze at the supply to check the earth and neutral integrity. A lost neutral will cause 230V between earth and neutral in a T-N-S supply
 

Reply to the thread, titled "Neutral is LIve?!" which is posted in Electrical Wiring, Theories and Regulations on Electricians Forums.

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