April 2014
How to test an RCD or RCBO
https://www.youtube.com/watch?v=CFT4z1PSxpc If you have an electric shower it is vitally important that you have a RCD or RCBO (safety switch) in the circuit. There is usually one protecting sockets and one protecting the shower. If you have an electric shower, turn on the power button on the shower and then press the test switch on […]
No RCBO on Shower and Burnt out connections on Main Fuse
While working in a house fixing lights, I discovered there was no RCBO (essential safety switch) fitted to the shower circuit. When I opened up the fuse board to fit an RCBO on the shower circuit I discovered the main fuse had been overheating and the insulation on the cable had started to melt (see […]
The Economist explains: Why lithium batteries keep catching fire | The Economist
IN THE past year rechargeable batteries containing the element lithium have been in the headlines for all the wrong reasons. Investigators in Japan are investigating why a lithium-ion battery overheated on a Boeing 787 Dreamliner at Narita airport. Last year Boeing grounded its entire fleet of the next-generation plane after the lithium batteries on two […]