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I need to clarify something that's rattling around in my head. I was taught when testing lightning protection systems that the maximum permissible combined electrode readings shouldn't be over 10 ohms. So we would test all the electrodes individually then work out resistance in parallel. We...

As usual I will bow down to many years of experience on this site. My father in law has found a replacement motor for his milling machine, runs up fine on the bench however will not run under load when mounted to the machine. He's asked me to look for some new condensers for him but I seem to...

One of our teams have recently installed some service sockets, 13 amp one gang, in a BT exchange however there's no RCD protection for the outlets. I was not aware of this installation until the cert came into my possession. These sockets are in the bottom of a 600mm telecoms rack and are for...

Brain picking time, had a job on today to replace a DB in a street-works cabinet that is fed from a lamp post. The Lucy head has a 16 amp BS88-1 fuse fitted however I'm having a little trouble finding the time/current characteristics for this standard of fuse in BS7671 or on the web so I can do...

Hello. I know quite a few names on here from other places that shall not be mentioned, going under the username of Strima. For those that don't know me I'm a 5WW that started in 2011 and haven't looked back since. I'm currently working in the telecoms industry as a QS for a national company...