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All I can guess is that it may be intended to show there is a supply available at the meter output terminals The idea of green being used is not really a good idea as that is the sign of safe, which a live supply is certainly not.

Filmed in Thailand https://www.facebook.com/ShopGoodIdea/videos/vb.100002006985155/824166884326870/?type=2&theater

One I've never figured is where we have a 2 wire HV overhead line (single phase) and one fuse operates. We still get reports of low volts as some customers have some power! Never figured that

Too many variables to predict what will actually occur. Certainly despite the theory the usual outcome is 1 x full volts 1 x roughly half volts & 1 x nearly zero volts. It was tested in ideal conditions many years ago and that was the outcome. It can also change if a conductor is on the...

Westie didn't make it clear but I have never come across a star primary transformer. Such a design would make a mess of our protection systems and could risk an interesting failure if fault current got into it

Looking closely at the photo, the live core of T&E is probably connected to the OP load terminal and just provides a signal Regarding the lack of OP load tail. I have an E7 connection but no E7 heating, it was common to install E& and take advantage of the cheaper rates to operate washers...

Button in top left hand corner. Generally yes, except (certainly) when there is an isolator fitted. It could be argued that this applies to this circuit!! It's true to say that out here ther interpretations can get difficult

Yep it looks horrible but the Supplier will argue that it does not form part of the consumer's installation so BS7671 does not apply! The reality is that it is in the metering cabinet, as it is connected directly to the meter not legally accessable to the customer to perform any work on it...

All three phase feeding the networks are delta/star General sizes in use (well here anyway) Single phase kVA: - 5 (Installed in the 1960's and only a few left), 15 (16), 25, 50. Split single kVA: - 25, 50, 100 Note : - where the above sizes are the same they can be connected in either...

Even an old lead sheathed 11kV cable can cause a heck of a mess it it fails in what could be classed as the open air. Bear in mind that at that voltage you can be dissipating 250MVA or above in a fraction of a second. Having switchgear terminations totally destroyed is a common occurence

It is possible that it is a very old hessian covered, lead sheathed, paper insulated cable which would put it sometime in the '60s or before.

Those guys are a lot more original than that, it's not unknown for them to connect a new service to the existing one, especially if there is a cellar or suspended floor

Yep its a bit of plain concentric cable with ready made connections at both ends. Used by some DNOs to reduce the chance of interference and theft.

Having looked at the OP again, it is very unlikely that there would be an earth mat in that ground as going back to those dates any earth would be linear and laid with the cables. There is a possibility of DNO cable in the area but they would tell you if that is the case. For that type of...

I would suggest he can do no harm to ask, the presence of some equipment (earth mats and/or cables) should not prevent it as long as it is just for a garden area. WPD will let him know of the presence of cables etc

To do that will require the installation of a 32mm2 alkathene pipe by yourself. As I say go for a viewing cabinet close to the existing CU which will contain the DNO main fuse and the meter. Then (depending on length, Max tail length is 3 metres) meter tails direct to the CU or a sw/fuse in...

I know what you mean, but fair to say, going back into ancient history when I was doing this work I never came across that issue as you describe. A position was usually found close to the meter for the sw/fuse

There has to be a limit at some point, what if it was say 10m, the same argument could be made if the CU was at 11m. 3m it is as a condition of supply

Yep

Generally customer switchgear is not allowed in the DNO box to allow space for development in the future (or something like that) I have known supplies refused to be connected if private switchgear is found in the Box. The only way to get this is to get permission from the DNO (of...