I moved in to the property a month ago. The RCD (earth leakage device) keeps on tripping. The Electrician’s Point of View. This happened three times, the same number of times as the number of MR16 lights. Hi all, I have an almost brand new fluorescent light which worked fine when wired in Twin and Earth, but now the building has been upgraded to a metal CU, and the wiring has been changed from T+E to SWA. Everything was running fine until last Wednesday night around 1am. My bathroom lights keep tripping the rcd when I switch them on, not just the one circuit, but half the board! My RCD Keeps Tripping. Discussion in 'Electricians' Talk' started by Jim122, May 30, 2016. In our opinion and point of view, there are large amounts of information both supplied in hardware and electrical stores as well as the internet material that can be misleading to parts (RCD) failing as a means of on sell. About 6 months ago I installed a light outside my kitchen door. Call a professional if you’re not sure how to address this issue. The first thing is to find out when it tripped, in other words, did they turn anything on and that was when it tripped? Lighting, Light Fixtures, Ceiling and Exhaust Fans - Lights keep tripping out - My lights keep blowing the trip circuit ????? Lights The circuit breaker trips when too much electricity flows through it or when it cannot handle the excess current load. An electrical circuit breaker is a switching device that can be operated automatically or manually for controlling and protecting the electrical power system, and the electrical devices connected to it. Faulty Light Fixtures . This is a fairly common thing to happen, yet can keep you searching for hours, especially if it is an intermittent fault. If the breaker keeps tripping multiple times, it probably means that there is a problem with the wattage or load, which only gets worse as the wiring itself sustains damage. Jim122 New Member. The first step is to turn off all of the lights or appliances that the breaker controls. The overload switch tripped on the RCD. First we must understand how an RCD works. Why are RCD’s so important? no lights are on the circuit will pop after 10Mins or upto 10Hrs. Replacing faulty fixtures will require working with potentially dangerous electrical systems. In a vast number of homes nowadays are devices called RCD’s, you may have one or more in your consumer unit ,a special RCD socket or a plug in adapter which you use with your lawn mower etc. Fluorescent light tripping RCD. I have several MR16 2 pin style light bulbs in my kitchen - The other day the trip switch for the light bulbs tripped when turning these bulbs on - I went and flipped the trip switch and tried again to the same result. Old fixture wiring can deteriorate and cause grounds, shorts, and ultimately tripped breakers. 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