Well i guess i solved my problem with these ERP 750 WATT? , WELL IT TURNS OUT WE SENT AN EMAIL TO SENTEY AND THEY ARE SENDING US 6 UNITS OF A different model MBP750-HS becuase they claim thier web page is not explicit enough and might lead to some misunderstanding, bottom line-  these socalled ERP 750 WATT units are only capable of 150 watt per line maximum 300 watt total , we consumers cannot read specifications or maybe i just passed thru life gaizing at the stars