The Sunco 6” Slims each have 0.125A. For a 15-amp breaker, you want to only use about 80-85% of the breaker capacity for safety reasons, in case the breaker cannot sustain the full 15A.In an ideal situation, you would calculate 12/0.125=96 pieces.FOR REFERENCE re: full circuit capacity      In an ideal situation you would calculate 15/0.125=120pc.