I applied for a free energy saving monitor in an internet offer a few weeks back and it has now arrived. It comes with a clip that fits over the cable from your meter and transmits your usage, presumably by measuring the current induced in the clip and calculating W = V x A.
It says I need to attach it to the live cable - and has a graphic of attaching it to the furthest right cable out of four, 2 in and 2 out of the meter.
In my situation, the meter is outside and the cables pass through a wall before they run inside my consumer unit, and it is not possible to differentiate between the two.
Does it matter whether the clip attaches to the live or the neutral?