There are amperes, and there are volts, and there are kilowatt hours.
"While at Foot's Cray, I met some of the backers of Ferranti, then putting up a gigantic alternating-current dynamo near London to send ten or fifteen thousand volts up into the main district of the city for electric lighting.
The result was that when Tode pressed that lever, instead of blowing the whole contraption to pieces, he got a couple of billion volts of electricity through his body, combined with a larger amperage than has ever been imagined.