Thanks for all the responses guy's! looks like i need to go back to school! Much appreciated, and will defiantly recommend the forum, and be back if i have any more problems.
It is clamped over the cable "pinching" it.
(given your question and a quick google it looks like i was using it wrong *sigh*, I remember trying it with the cable passing through the loop, but getting only 0 and assuming that was wrong)
I will try and keep this as brief as possible while giving the relevant details;
My gran is having problems with her electricity bill, she uses Gas for Heating and is using (on average over a month and a half) just under 16 units a day. (Having looked online, I found a ROUGH guide to be about 9...
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