Should I Do Anything About This?

[acvc]

Hi Folks.

I went to look at a possible rewire job last week and came across this (see attached pics). The house was built in 1962 and has all the original wiring. It was/is a Wimpy build, 10 miles north of Bristol.

The main incomer looks to me like 10mm SWA rising out of the concrete floor. The main fuse carrier is marked as 60A rated (however a sticker on the side states 63A), which does correspond with 10mm SWA current carrying capacity. Earthing is via PME.

The tails also look like 10mm (singles of course).

I've come across 63A main fuses before, but never seen the mains come in through 10mm. Is this now acceptable and should I request upsizing by Western Power? Or be happy that with diversity the full load may be handled comfortably by the mains equipment.

Thanks Peeps.

 

[Engineer54]

Older supply cables can be just as small, yet you will often see 25mm meter tails....haha!!! , Go figure!!!

The DNO don't generally use SWA Cable, but rather concentric cable, but it could be from the 60's..... Are you sure that's PME, theres no label on the cut out stating such, (a legal requirment i'm told) also the grounding conductor is bare and doesn't conform with any past or present PME regulations. Which leads me to think this isn't a PME system and doesn't look like it's coming from the neutral connection side of the cut out, but rather from the cable.... But i'm only looking at a photo or two!!!

 

[mechelec]

could be split concentric with the earth brought out from the side? of the cutout this would make it TNS not TN-C-S (PME) if it is split concentric it will either be 25 or 35mm most round here are 35mm.
The cable will be fine unless you want a supply upgrade but even if you did they would probably come and fit a 100A cutout on it anyway.