I am waiting for delivery of this amp just a few questions about complete system hookup to electrical,here's what I have so far,for the amp I have installed a 20A line just for the amp,next to that receptacle I have a 15A line just for the rest of my ht componets, tv panel hd A-35,bd1400,motorola HD box for TV,pioneer thx1015,all plugged into my APC-H15 on the 15A circuit alone nothing else,to the far right of my componets will be my sub this will be plugged into another 15A circuit that runs around my room its not solo like the others but there wont really be anything else plugged into this circuit except the occasional vacum or laptop, now my questions since the xpa gets its own 20A line do I need another surge protector device for that unit,and with the sub in its own receptacle on a circuit seperate from the others will I create a ground loop issue ,now all this electrical work is brand new and all three circuits go to the same proven common ground.Thanks in advance for any comments and or thoughts..