thank god i never had this problem with any of mine,What i did to curb it was whenever i seen them heading towards one,I went and 1 finger on their nose and and said "no repeatly" to them and that worked for me.But,as we are all aware cats will do what they want most of the time,but,what I would do if it wouldnt work for me,is i would try to hide them under carpets,or buy those plastic wire covers from home depot and "u'nails from Homedepot and hammer them in tight so the kitty in question cant get at cable.

Dave