Hi i have lowered my ceiling 12inches,i have put joists up then i have nailed tongue@groove over them,The main cable is atached to ceiling underneath,the white cable comes through a hole through the t@g with ceilng rose attached.My problem is the track of spotlights i am putting up are chrome,it has an earthwire in it,but the cable i am attaching it to only has live and neutral,i cannot get accesss to original ceiling,i have paid alot of money for the lights,can someone advise me please,many thanks jean.