w/v= a
w=552
v=120
552/120= 4.6
So 24 lights would draw 4.6 amps. I have read that 80% of a circuts cappacity is the max you should use while growing weed (though I dont know if that is the best number or not).I do know 4.6 amps is fine. if 80% is the number you use, then 62 is the most...