LV distribution systems: single phase or 3 phase? 7

[grounded7]

Hi,

Its a pretty basic question (embarassingly enough) but I am somehow confused about the phases on 415V distribution systems (typical neighbourhood voltage) in the UK.

Some references quote that voltage is stepped down from 11kV (3 phase) to 415V (3 phase) at the end of the street and this is then distributed as seperate 1-phase supplies, one phase per street or groups of streets, so that each house in the street gets a single phase supply.

While others state, that the 11kV (3 phase) is stepped down to 415V (single phase) and this is then distributed as it is, which I take is equivalent to 240 V (3 phase) supply.

Neither of these statements might be correct. The more I probe in, the more confused I get. Could someone kindly explain this stage of distribution to me?

Thanks.

 

[waross]

Thanks Scotty. I guess my information was off. That was the information I received when I queried the 0V, 120V, 240V, grounded at one end.
I guess I got caught out once by the original connection and then again by the explanation.
Apologies to all.
Bill

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[ScottyUK]

What are you apologising for???


----------------------------------

If we learn from our mistakes I'm getting a great education!