Which bit is the detector - the warmer circle?
Doesn't that show that the wire's path is colder than everything else?
Yes the cable is colder, I think the insulation further from it is squashed in and where the cable is, is just kind of loosely hovering over it with a gap where the cable comes off a beam which is what's letting the cold flow in and around it
@greentricky started
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Which bit is the detector - the warmer circle?
Doesn't that show that the wire's path is colder than everything else?