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- 9 Dec 2019
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HI, We have an extension to our house supplied by an RCD spur connected to a ring main. There is 240 volt going to the supply side but only about 30v on the load side. A plug in circuit tester is saying an LE fault on all the sockets in the extension. So far I cannot find a fault in the extension circuits, could the fault be upstream of the rcd in the ring main or any other circuit in the house. Thanks.