Class II leads can't be stuck into class I sockets 'cos the earth pins in the way.
But as far as swapping the leads, thatís a different matter. I can't see any way around the problem, but what we do here is to put a laminated label around the lead indicating the lead was test on that particular machine on that date, if the staff swap the lead, then thatís up to them.
I have sent Memoís, spoken to the General Managers, emailed around the Trust not to swap leads, but still it happens. Iíve ended up sticking 3 amp fuses in all the leads apart from those that need a higher rating and if they are swapped and the fuse is popped, you can ask the question why was the lead changed?