Is this JB adequate for the design and use.

[Shaun H]

I found this JB in the loft, the mice have eaten the JB cover as well as some of the wiring, but aside all that in your opinion do you think the JB is overloaded?

 

[westward10]

How are we supposed to know whether it is overloaded without additional information.

 

[brianmoooore]

We can't say if it's electrically overloaded, but at least one terminal is mechanically overloaded.
Irrelevant, since the fixing point for the cover is totally broken off, and it needs replacing ASAP by a more modern junction box, suitable for the number of cables present, such as a Wago box and connectors.

 

[Mike Johnson]

Hmm continental 7 on the bottom right grey cable with a double cross through it, wonder if that is indicative of the installers origin.

 

[loz2754]

The orange 2 core lawn mower flex is also a possible cause for concern, as there is no earth (CPC) in that cable.

 

[Dustydazzler]

Looks fine , whats the problem

Probably been like that for decades and works

 

[ipf]

I didn't know mice were into bakelite.

No way has that been nibbled. Smashed and lid dispatched by a cack-handed DIY merchant, more like.

 

[Dustydazzler]

Yeah some ham fisted sparks added a cable and couldn't get the lid on properly so just mashed it up and chucked it most likely

 

[DPG]

I think any sparky worth his salt would be replacing that. I'd advise getting someone in.

 

[phil 01]

Are there any earths on any of the circuits? But if this a spark asking the question back to college for you

 

[brianmoooore]

Are there any earths on any of the circuits? But if this a spark asking the question back to college for you

We have power in and power out complete with earth wires, plus the switch and lamp wires for two lights, all without cpcs, and then the orange flex feeding a second lamp on one of the circuits.
All, except the flex, pre 1970.

 

[phil 01]

I expect your looking at 60 years old wiring maybe you should look at getting it rewired

 

[ipf]

That permanent live term looks juicy.

OP. Any idea who's numbered the cables?

 

[davesparks]

I expect your looking at 60 years old wiring maybe you should look at getting it rewired

A picture of one broken joint box is hardly a good reason to jump to the conclusion that a rewire may be required!

 

[Dustydazzler]

To be fair it is old twin cable with no cpc so in reality I would be looking at a re-wire sooner than later