Discussion in 'Home and Garden' started by psd99, Jul 11, 2017.
the cable has writing on it
trying to work out what that means.....
Is that all that's written on it? Would have expected core count, csa and max voltage as a minimum on the outer sheath.
that is all I can see
I'm going to open the junction box on the inside of the garage and show y'all a picture of what that looks like when I get a chance.
Will be 3 core 6mm i reckon.
I think it is 3 core too
these are my mundane attempts at pics such a shame what they did to photoshop so using tinpic now which is as useless as some people I know!
is the 6mm the circumference around the wire?
photobucket I meant*
it seems they've put the earth together with either live or neutral not sure why
I wish I paid more attention to this when I got the wiring done in the whole house.
Hmm well its deffo armoured
But looks like the armour is not earthed so that pretty much negates my theory I am afraid
6mm relates to the copper element
what was your theory again?
I was hoping you'd look at that and see something glaringly obvious like it's not been earthed that is your problem right there. shame.
got to be nicked slightly underground and needs repairing.
theory that shielding is earthed and is nicked and causing your problems, its still possible its earthed at the other end but unlikely one end would be and the other not imo
worth just checking the other end as well I guess, you should never rule out a loose wire etc before you start digging!
so basically open the whole RCD and check whether on the RCD side the earth wire is connected in the same way?
If it Is NOT the same, then what shall I do? (rather check first this than dig up my lovely turf)
If at the other end the shielding is connected to earth then its your call
If you have nicked the earth only then it could be causing the trip, disconnecting this may stop it.
But I am certainly not saying thats the right thing to do, there seems to be some dispute amongst electricians on using the shielding as a secondary earth or not. Try googling it to see the different views.
I will check the RCD first, I bet it is wired the same way.
It wouldn't work if that was the case. If you look closely the wire that has been wrapped in earth tape (grey core), and your neutral go to different points. I thought the same as you at first glance but that is not the case.
so basically the earth wire connects to nowhere!
Dont think so, looking at your pic there are bare copper tails running to the other side of the terminal that earth is screwed into. Supposed to be covered in green/yellow tape or tubing.
No the earth connects to the earth block in the black box.
Thats the nastyiest looking way to terminate an armourd cable ive ever seen!
If you have a volt meter disconnect the cable (both ends) and check the resistance of all the cores to earth one by one. And then check them all to the armour one by one. And if you still dont find anything check between eachother
We test with a megger at work (500/1000v) to earth but you should hopefully be able to see if someings fubar with a normal meter.
And yes 6mm is the conductor size, will be 1.5mm armour.
Where are you located out of interest?
cheers mate sent you a message in trust.
Have replied mate
That is a pretty poor installation tbh, I wouldn't be surprised if something wasn't a miss in the garage if that's how they terminate a SWA.
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