Can you please give me your solution. The aircon man told me it was really rare to see an open cap could trip the ELCB. ELCB and RCCB is the most confusing terms in electrical. Hi Kumar, Learn how your comment data is processed. I wonder why this did not work on your It also checks the polarity and continuity of the Live, Neutral and Earth conductors. } Maybe that your ELCB is more sensitive than the thermal cut off of your aircon. unit. document.getElementById("af-form-413914580").className = 'af-form af-quirksMode'; Caps on Aircon are very common so its a good practice to have 1pc spare. why the problem of nuisance tripping of RCD is very relevant. When we had problems with the main breaker outside tripping, I told them I would not mess with it. The leak to the earth is the most likely though. David Maltz, Hi Jestine, 3 for Outbuildings, 4 for Stove, etc. Where you identified only one Neutral cable per circuit, you can isolate each circuit by disconnecting the corresponding Live and Neutral. If you are looking for electric cables, different types of cables , or cable sizes to get this issue fixed, call us at D&F Liquidators . 10A; 20A; 30A etc.My guess is that your cap developed a fault to the can, causing a fault current flowing to ground (earth), causing the ELU to trip. Sir. It seems to be no reading. There are few causes why it can trip such as shorted electrical/electronic products, burn/shorted power lines in the concealed area, defective MCB and etc. See our, http://www.ee.co.za/article/eca-283-08-carte-blanche-expose-on-electrical-contractors.html, http://www.theforumsa.co.za/forums/showthread.php/21519-Frustrating-intermittent-earth-fault, https://en.wikipedia.org/wiki/Residual-current_device#History_and_nomenclature, https://store.sabs.co.za/catalog/product/view/_ignore_category/1/id/2140452/s/sans-10142-1-ed-2-00-1/, Time to switch to the new ZA electrical plug. Platform for all technical issues, Mr. Jestine, Sadly, we don’t live in a perfect world. 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. When one is stuck with a motor that hums but won't start that is needed "Now" like a water pump on a week end, You may get it started to pump up the water tank, for example, by shorting across the cap temperarilly, to get the pump started. dear Justine , Thanks Pete Singh. You can temporarily disconnect individual circuits, and if the nuisance tripping continues, you can reconnect the isolated circuit and assume that the fault lies in the other circuits. I isolated this circuit with the double-pole breaker on the sub-DB, to be sure that this circuit was not causing the fault. Instead, the residual current caused by the uncancelled magnetism in the core is deemed to be earth leakage current. This has an electronic controller with a double-pole relay. For your information there must be something that had gone wrong and drawing too much current causing the ELCB to trip. Leakage currents do exist; these currents use undefined paths on their way out of and return to the source. Sorry I don't understand your question. I have another house not far away but do not experience similar problem. Now a days ELCB is completely replaced by RCCB. })(); 8. so true. Hi , that is the correct answer . I received this microwave from a customer with no heating... // Special handling for facebook iOS since it cannot open new windows I made the following changes: With the Motorgate on a separate circuit (CB6), I was able to isolate the fault for the first time. Inside the DB, label all cables with the corresponding circuit number, e.g. but this time on AC.Regards. Your email address will not be published. -->. } Overloaded Circuit . "Please contact a professional if you don't understand single and three phase electrical wiring" House wiring is dangerous as it deals with AC high voltages"Please take extra caution when dealing with High voltages". Do you have other power supply such as generator set or invertor to feed the flats once the city power supply interrupt? this would cut the circuit off. Each of the other Neutral wires connected to this Busbar will correspond to a No ELP load circuit. This article is brought to you by Jestine Yong. I have used this several times to keep us in water till I could get a new cap on Monday. i tried out all the MCB (8 MCB at 1st floor,10 MCB at ground floor) but tripping still occurs. Fuchs Electrical Industries, a company in Alberton, near Johannesburg. I disconnected the Live and the Neutral of circuit CB6. Once you have identified all the Neutral wires associated with CB5, switch off CB5 and proceed to Load 6 by switching on CB6. Perhaps because the installation still works with only a Live and a Neutral, despite the inherent safety and reliability considerations. May be once a day , may be one in two days. Just within 10 minutes he showed to me a big capacitor (30uf 400v) and told me it was open circuit. any idea any one?