salam alikum, on eids third day i have a strange problem in my ups wiring.
i have desi made 2000VA 24 VDC UPS with two ags 165 batteries. i have connected my ground floor and upper portion on it which are from two different meters. at night there is trip in the main supply and voltage fluctuates and remains on 120 to 150v for a brief moment of 20 min. then it shifts to ups. after few min i have a very strong smell of burning near ups. i called the ups company and the electrician came and said neutral wire is burnt after checking he replaced the whole wire from outlet since it is placed at distance.
Now the problem is whenever supply is on ups there is a flickering in the upper portion connection while ground floor connections are ok i .e no flickering.
is there some neutral wire problem since its running fine before this problem.
help in this reqrd is required from wp member. thanks.