Any wire like that within the dwelling should terminate into a junction box. Always report wires like this with a picture and reference to them needing to be terminated within a box or enclosure.
However I would suggest you TICKER it…because if it is LIVE…you only compound the potential hazard associated with it and this is something your client will want to be aware of…most certainly if they have children as well.
For those who have their minds in the gutter, Paul is saying use a ‘voltage tick’ or use a ‘non-contact voltage detector’. Some even call it a ‘hot stick’, but linemen will smack you, rightfully so, for calling them that.
Yep…now technically they dont have to remove the wires…if abandoned…unless as it stands now…it deals with communication wires and a few other areas.
But mainly…as you said, inform them it needs to be terminated in an enclosure as you already do…yep I see it ALOT…mainly in attics.
But basically…for example romex would not have to be removed if abandoned…BUT it needs to be terminated in a box and remain accessible.
Now their are other ares that would require the removal but they really dont apply here as they mainly deal with regards to audio signaling, class 2 wiring and communication wiring as well as fiber options…which is quite ironic if you think about it.