single phase 3 wire or?

[the pict]

On page 46 of the BBB we have various diagrams of the options of supply
the SSE are due out sometime within this millenium to provide 3 phase supply , at present there is what I can only assume is a split concentric supply cable connected to 2 cutouts the 3rd I thought was just unused and the building had 2 phases with a 3d phase available on request something that is not uncommon on fraggle rock but on initial testing ZE PFC PSC etc I get nowt between phases and 230 to E or N on both , so is that a single phase two wire as I would expect line voltage on any of the phase angle variations 180 90 or 120, confirmation or opinions ta in advance

 

[Risteard]

Surely 1 phase 2 wire if there is no potential difference between any of these phase conductors.

 

[the pict]

Unable to make a definite assessment, two cutouts, two cores from main cable, L1, L2 displayed on supply meter, so I await the DNO

 

[Deleted member 105166]

My understanding is if there's no potential difference between L1 and L2 incomers and 230V L-N and L-E, it can't be anything other than two splits off the same phase. If there's a three phase supply ordered, it may be worth mentioning the current arrangement to the DNO, although they will (should) pick up on this fairly quickly once onsite, it may save a few hours work, if they otherwise don't find out until testing.

 

[the pict]

Spot on, dno confirmed exactly that on the phone to me yesterday, there is a pole mounted transformer a short distance away which I never saw that has 3 phase capability