Thanks for this link Philipma1957 - I just read the whole thread and will be tweaking my L3+s and L3++'s tonight!
Could I ask you a question? I have been looking for a watt meter for testing wattage use on my miners but am having real difficulty finding one that will work with 240V. Could I ask which one you use (brand/model) or if you could recommend one?

Thanks!