What is your mains voltage? (UK only, please)

The Homebrew Forum

Help Support The Homebrew Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

What is your mains voltage?

  • 216 to 219

    Votes: 0 0.0%
  • 220 to 223

    Votes: 0 0.0%
  • 224 to 227

    Votes: 0 0.0%
  • 228 to 231

    Votes: 0 0.0%
  • 232 to 235

    Votes: 3 13.0%
  • 236 to 239

    Votes: 6 26.1%
  • 240 to 243

    Votes: 3 13.0%
  • 244 to 247

    Votes: 4 17.4%
  • 248 to 251

    Votes: 0 0.0%
  • 252 to 255

    Votes: 0 0.0%
  • sorry, but I'm incompetent!

    Votes: 7 30.4%

  • Total voters
    23
238V in South London right now. (voted)

I worked on a site that had diesel generators running at about 4kV. The safety video we were shown made it very clear to not mess about with it. Not much left other than a pair of boots.
 
The weighted average of all votes so far is 239V. So let's put to rest all those comments that UK voltage is 230.
 
230V is the nominal voltage across the UK and EU. It used to be 240V in the UK and 220V across the EU until it was harmonised (the official term for it) in 2003. 230V is used in the electrical industry for design purposes, though 240V is still well within the allowable voltage tolerance (+6% to -10%). In practice, due to financial & pragmatic reasons, the generating & transmission voltages remained the same post-2003 in both EU & UK. Depending how far away you are from the local sub-station, and how far you measure down a skinny bit of cable, and what sort of load is being drawn, you'll likely see single phase voltages from 215V to 245V.
 
Last edited:
The weighted average of all votes so far is 239V. So let's put to rest all those comments that UK voltage is 230.
I find this rather odd. We talk about 230V because, as you're aware that is the nominal voltage. Does it really bother you that on average it might be a bit higher than that?
 
Just voted, sorry it's a tad late ☺️
239v
Just fitted a thing for the boss and I like to check all is well. 🤓
 

Attachments

  • 20200719_151905.jpg
    20200719_151905.jpg
    14.7 KB
Back
Top