Ok so if you look around the web for a minute, you will find that there are lots of power usage meters made for 220 to 240 VAC. Over in Europe, most countries have higher voltage at every outlet. Another good model is TED: the energy detective.
If you have a decent ammeter, you can manually log power usage, but without power factor correction your readings will be of apparent power. When blowers and compressors start, there will be a transient "spike" of
power as the motor begins to rotate.These transients are difficult to quantify without a more advanced piece of equipment. After the spike disappeesrs the current draw is easy to measure.
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