Dangerous Intake and fusebox in a North London Flat.

[RF Lighting]

That head is quite normal. It looks like it's rated at 200 or 300 amps per phase, and it's not made of metal. This then feeds the 100A fuses, 2 per phase.

It's exactly like a modern ryefield job, but minus the cabinet.

 

[JohnW2]

That head is quite normal. It looks like it's rated at 200 or 300 amps per phase, and it's not made of metal. This then feeds the 100A fuses, 2 per phase. It's exactly like a modern ryefield job, but minus the cabinet.

Oh. It looked like metal to me! Weren't those three thingys at the top of the head originally meant to house the fuses?

Kind Regards, John

 

[RF Lighting]

Yes normally. Slightly worrying how the op knows there are no fuses in the carriers, and the lack of seals...

 

[Iggifer]

Yes normally. Slightly worrying how the op knows there are no fuses in the carriers, and the lack of seals...

I don't understand why they would fit solid links and extra fuse carriers? And as it looks like the neutral from the bottom left meter enters the left hand side of the far left added fuse carrier, I hope there's a solid link in there

 

[seasickstevie]

... looks like the neutral from the bottom left meter enters the left hand side of the far left added fuse carrier

Looks like it enters the neutral link on the right to me.

 

[JohnW2]

Yes normally. Slightly worrying how the op knows there are no fuses in the carriers, and the lack of seals...

Yes, that occurred to me as well!

Kind Regards, John

 

[PBC_1966]

... looks like the neutral from the bottom left meter enters the left hand side of the far left added fuse carrier

Looks like it enters the neutral link on the right to me.

And to me, if we're talking about the feed to the meter. The output neutral looks as though it runs right up against the left-hand side of the far left fuse carrier and into the trunking.

Here's the image lightened somewhat:

 

[ban-all-sheds]

What do you think will happen if a 22kA fault developed? - The place will probably go up in flames, as the breaking capacity of a rewireable is only 1kA, far short of the supply 46kA PSCC.

It looks like a classic case for a full strip out and re-wire, in order to make it safe.

I hope you've not advised your client of that - you'll look a right t**t if you have.

 

[333rocky333]

If I'm right, then, as you say, I can't see what the alleged problems is. Each phase is fused, very close to the cutout, simply not in the precise place 'originally intended'.

Kind Regards, John

The white ones take "J" fuses, I dont think you can get 100 amp or less, could that be the reason

Edit
sorry john, i thought i only see 1 black fuse off each phase.

 

[RF Lighting]

Yes normally. Slightly worrying how the op knows there are no fuses in the carriers, and the lack of seals...

I don't understand why they would fit solid links and extra fuse carriers? And as it looks like the neutral from the bottom left meter enters the left hand side of the far left added fuse carrier, I hope there's a solid link in there

Because the setup shown allows them to have 5 cutout fuses, so a major fault in property one or work carried out by the MOP will not affect the supply to any of the other properties. It also means each supply can be rated to 60/80/100A as the DNO sees fit, rather than having to share a single 100A supply between two flats.

 

[PBC_1966]

It also looks as though they had three phases in use at one time, but now everything is on two.

 

[333rocky333]

It also looks as though they had three phases in use at one time, but now everything is on two.

I thought i see 3 reds, then again I only see 3 black fuse holders at first

 

[PBC_1966]

I thought i see 3 reds, then again I only see 3 black fuse holders at first

It looked to me as though that's just a "ghost" of a previous link showing on the backboard on the left-hand phase:

 

[Guitarguy]

This setup looks to me as the original fuse holders in the main white service head were possibly re wireable and have been replaced by solid links that feed standard fuse holders (ME60 fuses) for each phase. The red and yellow phase fuseholders are each bussbarred on the incoming (bottom) side to make two fuse holders per phase to enable each supply to be individually isolated.
This lot was either done like this to avoid messing around with rewireable fuses or to just make it so that supplies can be isolated individually.
There is nothing really wrong with the setup, it's just looks old and a bit horrid but isn't an unsafe way of doing it.

 

[333rocky333]

This setup looks to me as the original fuse holders in the main white service head were possibly re wireable

you obviously see inside more of these than any of us here, I for one, never realised they done rewirable ones