What is normal voltage in Home?

Sometime I am getting 250 and at times it fluctuates to 200 is it normal
what should I do ?
Recently my Laptop power IC got burnt twice in 2 months and laptop technician says you have voltage fluctuation issue
what to do?

fluctuations are normal … either use a big stabilizer for ur home or a ups for ur laptop …

But still what should be a normal operating voltage?

in my area the voltages are like 195 to 225 volts … vary time to time