I use a Blue Planet Energy Meter purchased from Canadian Tire for about $20.00 to monitor the electrical load placed on a circuit and estimate the monthly cost incurred by an electrical item.
I originally bought it to monitor the electrical draw of my MH lights on a circuit as I was always concerned about over loading the circuit. We have all seen the the back of peoples tanks with 8 or 10 items plugged into a single wall circuit.
These thinks are really handy for the price.
Tom R
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