Dear members, I need help in wiring up my new APC BI850SINE invertor and Exide 100AH battery as a backup power for my home. I live in India. Here V = 220-240V and Hz = 50 (you may know this already ..) The home has two separate wirings. One is for the low power, that is lights,fans and the like. Other is for the high power, that is Geyser,Washing m/c, water pump etc. Now I want to backup the lighting circuit for my home with the inv/batt. I know this will be big load if ALL lights and fans are on, but i bet that not all will be on a the same time when the power goes off . What is the circuit and wiring diagram for that ? Do I need anything more, like circutbreaker,fuse, etc ? Some one has made a similar Qn here: http://forum.allaboutcircuits.com/showthread.php?t=16845 Not sure if that's sufficient. If you need to send me a pic, send it to <SNIP> Thanks a lot in advance. In anticipation for some answers..