as I understand when we need to purchase AVR(automatic voltage regulator), based on your item watts / 0.6 = ****VA of the AVR you need. but anyone know how to calculate Joule when consider purchased on surge protector ? how many of joule require of surge protector if we have about total items ~1800watts?
please advise, thx

This post has been edited by djlah: Apr 12 2010, 02:45 PM