Please excuse me, i attempted a reply and lost it some where after hitting the post button... hey-ho...
Whilst the premises were empty and the industrial unit non operational the fault was not present. During my half hour window I investigated connections and setup at the isolator and busbar...
Am I correct in assuming that the casing of the transformer is connected to the star point and hence providing the main earth to the MET. If so the use of earth rods also connected to the MET is simply additional and the done thing?
I am going to isolate the supply this evening and separate the...
I need you to help me understand...
on the secondary side of the delta star transformer i have 3 phases and a neutral conductor that enter an isolator and then busbar chamber (shown in one of the 4 photos) I also have an earth conductor form the transformer (not shown in photo) to the earth bar...
I'm not sure what to make of it yet, i have to consider floating neutrals? poor earth? but as I say; all visible connections appear electrically and mechanically sound
not sure how to upload pictures so here is a link
Dan
No mistake with my collecting voltages.
It certainly was a short, but why it didn't go bank or poof has me very puzzled
neutral seems fine.. the problem is with the earth, but i don't understand why. please see my edit at the bottom of my original post. still need your thoughts!
I think I have a faulty 66kva transformer but have little to no experience with them (delta star I believe)
Call out due to reported problems from some of the tenants (offices that are rented within part of the building)
some RCD protected ring final circuits disconnecting. Investigated at the...
I can recomend them. The remote is very good although I'd like it to be backlit. If you become a registered installer you get additional discount. When you have shopped around I'd like to know what the best discount you have been offered is.
I've just replaced my own 50w GU10 lamps in the kitchen for Philips master 6w. There is no noticeable difference. Philips suggest they will work for 40,000 hrs (if memory serves me right) and give a 5 year guarantee. I guess this is because this is the predicted life span if they were on...
I have stumbled across another thread where they discuss short courses being available that then enable someone to be become a competent person registered on a DI scheme (i’m going to assume though, for my own sanity, that they have limitations) to enable them to self certify part P. Apparently...
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