I am installing this appliance that has two identical white wires and an earth wire. I am stuck on which white to connect to live (Brown) and which white to connect to neutral (Blue). My mains color codes are: Brown===Live Blue===Neutral Yellow===Earth
This is an imported appliance from external markets. I have tried looking for its country of origin with no success.It must be from China or Brazil.However after thorough research and consultations with local electricians, all of them (which I consulted) agreed that the two whites have no polarity or so to say. I connected either of them and the appliance works as expected. Thanks all for your review and taking your time to help.
If it's a light fitting with an Edison screw lamp holder. Then you should use a multimeter to test which wire is connected to the center pin of the lamp holder and wire it up so the live wire connects to the center pin of the lampholder.
Otherwise it almost certainly doesn't matter. If the manufacturer believed polarity was important they wouldn't have used two white wires.