Hello Sir/Madam

Why is Electricity supplied in multiple of 11? Like 220 V, 440 V, 11000 V etc.

Thanking You.

I didn't know the answer for this but perhaps this answer from this site (http://wiki.answers.com/Q/Why_is_electricity_supplied_in_multiple_of_11_like _220_V_440_V_11000_V_etc_Thanks), will answer your question.