, .
arch"
ts.
It explains the somewhat different take on the CFL bulbs output. Our incandescents are quite a bit dimmer. Much more so than I realised until you gave the numbers above.
It makes me wonder what is the ideal optimum drive voltage for a classical filament lamp at fixed wattage. 110 is clearly better than
230 but is there a peak inbetween the two or does efficiency continue to improve at lower voltages. When do competing effects or impossibility of manufacture cut in?ed. =A0
UK
UK mains voltage was harmonised with the EEC from Jan 1 2004 with an assymetric tolerance band which roughly overlaps the old specification
240 +/-6% with a new one of 230 -6% +10%In practice my local mains daytime is usually about 232 to 236v (and somewhat higher in frequency and voltage late at night under no load). Lower at dinner time and on cold days. We are on nice new aluminium 3 phase cable.
A local farm on the old wire is currently complaining that they get a mere 208v and brownouts when a local sewage pumping station is runs but they are on the end of a long cable run shared with a very brutal load. So far the electricity authorities have refused to sort it.
Regards, Martin Brown