In message , at 10:32:01 on Sun, 22 Mar 2020,
Roland Perry remarked:
In message , at 09:54:22 on Sun, 22 Mar
2020, Tufnell Park remarked:
On 19/03/2020 20:41, Roland Perry wrote:
In message , at 14:49:12 on Thu,
19 Mar 2020, charles remarked:

I presume street lights are billed to the local council according
number of hours that the timer turns them on and the rated power of each
light (which varies with technology eg sodium versus LED) - unless each
lamp-post has its own meter.

working (as a student) with SESEB, the substations often provided a
separate street light supply with the time clock in the substation.
Yes, they generally have a completely separate supply (from the
households) in effect a 13A extension cord from one lamp-post to the
next, and next...

Street lights are not normally metered for billing purposes. The
councils pay a fixed fee based on the lamp type, wattage and hours
run.

It's nothing to do with metering, rather than the size of cable used.

The Cambridge scheme uses higher efficiency (not LED) lamps, reducing
the consumption from 50 to 30 watts per streetlight (apart from big ones
on trunk roads).

Photocells are the normal method of lamp switching on/off but recent
trends in switching off streetlights from approx 11pm to 5am ish has
brought back timeswitches for that purpose.

Round here they've been replaced over the last 10rs with lights on some
kind of wireless network. So they can turn them on and off remotely.

Here we are, nodes on the IoT (Insecurity of Things).

https://www.telensa.com/news/telensa...city-wireless-
control-system-for-55000-led-streetlights-in-gloucestershire-uk/

(That's about Glos, not Cambs, it's the company that's confusing based
in Cambridge).
--
Roland Perry