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Hi everyone just a general question I came across a 3 phase board at a university and it was running 12 stage lighting dimmer packs 3 phase all on 32a 3 pole mcbs and 2 circuits on 64a mcbs, my question is if the dimmer packs was to pull 30a each the mcbs would be fine but would the 100a main...

Hello everyone just a quick one and any advice is welcome, just fitted new consumer unit Schneider split board single phase in a house done all my verification tests all ok and passed but then come to do RCD ramp test as soon as I touch the test button on my metrel it trips so I tried a test...

Hi everyone, I've been asked to fit a new db in a house that still using the old fuse wire db, now I've only seen a photo of old db and there is only 5 circuits now I'm assuming that the sockets upstairs and down are only on one circuit as is the lights can I just change the board and test or...

Hello everyone, As in my previous thread I have passed my testing and inspection exams a couple of months ago and so still green at this sorry but I have a question, my bosses have asked if I would do a condition report for the insurance on our warehouse and offices the building is decades old...

Hi I just recently passed my testing and inspection exam and just have a question when testing a circuit. My question is if I install a short Ring with 4 fused switches next to the DB and then from each fused switch I run a 50m cable to a double socket, when I come to test for Zs do i treat my...