I use a megger 1721, I've also used a 1725. I don't particularly like the design of the leads, this is supplied by my company so I have no choice but it's a good bit of test kit..
In the first instance I'd study the Regs and obtain BS7671 and from there depending on whether you wish to become a maintenance Electrician or installer of some kind? Some of your existing training should be helpful and relevant but it's difficult to know how much exactly
If the leads are giving 0.4 or even -.2 that's higher than they should read. I'd expect about 0.1. Suggests that it needs to go back to get looked at by the calibration place if you've tried a new set of leads. Unless you try the above and it works
I'd have thought the Bezel should screw off with a quarter turn or similar, if this is just one light if it's not coming off you may have to replace. If there's another see if that has more play in the feed to it or try to see if the bezel comes of easier that the one you're currently trying to...
Probably needs someone with more experience than me but I did get involved in a renovation project for a Hotel about 7 years ago. Here's some thoughts. looks like there's already a bit of design going on in the Summer house. Obviously requires at least one three phase board with various sub...
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