Disconnected cable inside garage fuse box

[borzio]

Hi guys, I have a garage fuse box installed a few years back by a qualified electrician with a 3 core cable from the house consumer unit. All has been ok and working as it should until today when I was moving some boxes and inadvertently pulled the 3 core.
The 3 core cable has brown, grey and black. The grey cable came loose and although power registered on every external cable as live (on my wee power pen) none of the lights or ring sockets worked.
At no time did the fuses trip in the garage, nor did the fuse in the house unit.
I isolated the power from the house and opened the garage fuse box as shown, the grey cable having exited the fusebox as I was doing this.

I have the brown cable going to the top of the left MCB, and the black cable (which has been sleeved with earth sleeve) going to the eartn bar at the top right of the photo.
My now loose grey cable needs connected, but I don't know to where.

Would greatly appreciate your advice, and apologies for any non standard electrical descriptions above.

 

[pete01]

Top left of the rcd marked N, but I cant see the top from the photo.

 

[chivers67]

Did the grey not have any type of Blue Sleeving on it?

 

[plugwash]

The grey wire is most likely the neutral, it should have been marked with blue tape or sleeving, but that may have fallen off, or many never have been fitted in the first place.

The live and neutral should go to the terminals at the top of the RCD (not MCB) on the left.

But what concerns me more is that brown/black/grey usually indicates an armoured cable, armoured cables are usually terminated with a gland that restrains the cable and earths the armour. It sounds like this installation may have been a lash-up from the start and is in need of some remedial work beyond reconnecting the grey wire.

 

[Harry Bloomfield]

But what concerns me more is that brown/black/grey usually indicates an armoured cable, armoured cables are usually terminated with a gland that restrains the cable and earths the armour. It sounds like this installation may have been a lash-up from the start and is in need of some remedial work beyond reconnecting the grey wire.

I am also failing to see any sign of a live, entering the top of the RCD.

 

[plugwash]

I am also failing to see any sign of a live, entering the top of the RCD.

I think I can just barely see a brown wire heading in the direction of the RCDs live terminal, but it's hard to be 100% sure.

 

[borzio]

Did the grey not have any type of Blue Sleeving on it?

No, none there or had come off in the box, so probably never there

 

[borzio]

I am also failing to see any sign of a live, entering the top of the RCD.

I'll look again tomorrow and try another photo, thanks

 

[borzio]

I am also failing to see any sign of a live, entering the top of the RCD.

Sorry, trigger finger posting

 

[SUNRAY]

The brown circled and grey arrow shows where the neutral belongs

 

[robinbanks]

Recommend checking the tightness of all connections, if a relatively light tug manages to disconnect the feeds

 

[ebee]

Well it certainly is a bit of a dogs breakfast.
I suggest you ask a pro to investigate and take remedial action.
It is difficult to see exactly what goes where (or what is intended to go where) fromyour pictures.

 

[Ragnar_AT]

Also the fact that pulling on the cable while moving stuff suggests that the cable needs to be fixed to the wall.

 

[Murdochcat]

Can you post a photo from further away?

Cables should never be loose and as for falling out - really?

 

[borzio]

Will try and get better shots today