On 20/01/2015 14:52, Arfa Daily wrote:

I'm wondering whether there is a high value
resistor between this wire and earth, and it is some kind of static leak
from the rotating drum somewhere.

Service manual (for the IDCA735IT if it's different) has J11 1 as
green/yellow ground and J11 2 as a black wire to the "drum sensing strip"

If that's any help...
http://elektrotanya.com/indesit_idca.../download.html