One of our electricity providers in London - UKPN - have made it quite clear that they interpret new guidance on unmetered supplies as requiring an electricity meter for all supplies where the total connected load exceeds 500W. For us, this would mean almost all of our ~5,000 traffic signal installations (let's hope it only applies to new connections).
In our experience the installation of meters delays projects and adds significantly to operating costs, not to mention the cost of replacing feeder pillars with something big enough to fit a meter in.
People might be interested in the "Consultation on draft guidance in relation to the Electricity (Unmetered Supply) Regulations 2001": http://www.bis.gov.uk/nmo/Consultations/Unmetered-Supplies-of-Electricity-consultation
The draft guidance certainly suggests that traffic signal installations are not automatically entitled to an unmetered supply. The prinicpal difficulty seems to be that traffic signal installations are not regarded as a "predictable" load - perhaps due to wait lamp appearance, dimming, or even starting ambers.
So my questions are:
* What is happening in the rest of the country?
* Do different Distribution Network Operators or Electricity Suppliers take different stances?
* Has anyone started installing metered electricity supplies as a matter of course for street equipment (in particular traffic signals)?
Any input appreciated. If you'd rather reply off-forum, feel free to email: firstname.lastname@example.org