They were the old imperial units back then not the modern day SI units!
I don't think so, by the early 1900s the kilowatt hour was well established - it is gas meters, that measure volume, and convert it it therms, that are more peculiar.
Gas was in British thermal units - BTU, but the confusingly similar 'Board of Trade Unit ' or BoTU for electricity was 1kW hr since before the 1922 electricity supply act
(although it appears as the kilovolt-ampere-hour in relation to DC mains.)
They were the old imperial units back then not the modern day SI units!
I don't think so, by the early 1900s the kilowatt hour was well established - it is gas meters, that measure volume, and convert it it therms, that are more peculiar.
Gas was in British thermal units - BTU, but the confusingly similar 'Board of Trade Unit ' or BoTU for electricity was 1kW hr since before the 1922 electricity supply act
(although it appears as the kilovolt-ampere-hour in relation to DC mains.)
