. This Question of the Day concerns loop impedances on motor circuits and MCB operation. It is answered[...] reads 10 ohms, protected by a 6A D - type MCB at the isolator. R1 + R2 reads 0.09 ohms [...]
MCB. I'm aware that there is a interconnection somewhere in the office, but if we cannot find[...] by a 16A MCB? Note that the maximum measured EFLI falls well below the maximum required in BS7671:2008
[...] is answered by SELECT: Question: I have to install a three - phase, 415V machine outdoors. Can I just protect the circuit using MCBs, or do I need to put in RCD protection? The machine will be permanently wired in a fixed position. Answer: Generally, if the equipment [...]
- delayed RCD as the main disconnector, plus a further two 30mA RCDs for the MCB - protected final[...] on the protective device in place, i.e. the MCB. Appendix 3 of BS 7671:2008 gives the requirements for testing
![[...] the Day - School lighting is 10A <b>MCB</b> protected. Is [...]](./layout/relaunch2008/images/newwindow.gif)
