As we know, we had already connected Phase & Neutral (from Power house) to Electrical Appliances i.e. Fans, Light points etc… So according the above UPS Connection Diagram…connect an extra wire (phase) to those appliances where we have already connected phase and neutral from (from Power house) (i.e., two wire as phase with same point). So no need to connect Neutral from UPS as it is already connected.
Working and Operation
(2) When Supply is not available from power grid
then Supply will continue through Phase wire (Output UPS) which is Connected from batteries and UPS to Appliances (Note that Neutral is already connected) . So the first one phase which is connected before UPS installation (i.e. Live Wire from Main board to UPS) would be inactive because power supply is not available from power house. In this case, you consume the store Electrical energy in the batteries.
If you Don’t understand this wiring diagram, Pleas Read this Article, thiis is wiring diagram no# 1 with purpose, Description, and working principle.
This is UPS Automatic wiring diagram no# 2.
Click image to enlarge
If you have a Question or want to share any idea, Don’t be hesitate to ask.