"Also this "it takes 27 seconds" crap is just rubbish. My electricity supply in to my house can only do 100 amps (according to the main fuse). I would never do that for prolonged periods as the meter's going to spin around faster than the Police Federation is right now."
Sure you're not going to use 100A for prolonged periods or most likely ever but what if your electricity contact meant you could only use 180Wh of electricity per month? That would be your 27 seconds @ full whack and I reckon it's about enough to boil the kettle twice.