Quote: "A lot of people look at a meter and see the disc spin around fast or slow. The thing forgotten often is to look at the constant of the meter. In USA Kh and in NZ revs/kWh."
Good point. I remember testing a meter for an old lady that ran perfectly, but she was adamant about changing it anyway. So I took out her perfectly good 3.6 Kh meter and stuck in a perfectly good 7.2 Kh meter. She was thrilled that it ran half as fast, stuck her finger in my face and said, "Told you so"!