According to European std. The domestic supply voltage is 220 V. When an equipment of high load current rating (Such as Kettle) is turned ON, the other elements such as 40W filament lamp is dim and also when checked any socket voltage with a DMM, it shows nearly 210 volts. How this happens..? In parallel domestic wiring, the voltages across any socket will be same(220). But how the heavy load affects the main supply of 220V..?
Voltage and Current in Domestic Wiring
load
Best Answer
This indicates that you have a higher resistance in the service connection than there should be. I think you should get a service call from a competent electrician.