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it appears that the mcb is okay as one light is working upstairs but no others. what would be the nect thing to check? Thanks for all your help

Hi again, It is all the lights upstairs. I have tried switching off all lights and retesting the switches, but all appear normal on the fusebox. When turning off the MCB and turning back on there is no noticeable difference to the others. There is no resitance when turned back on, but the...

Hi all, While turning on the bathroom light, the bulb blew, tripping out all of the upstairs lights. I turned the trip switch back to the on position with no problems. However, my lighting has still not been restored. Could this mean that the MCB itself needs replacing? if not, how could I...