Most of us have seen the charts showing different voltages and power socket pin configurations for various countries. Some even show what sort of telephone socket is in use.
But what of the lamp sockets?
My usual assumption is that areas that have been under British influence use B22 and elsewhere uses E27. I have seen some reference to B22 being used in Europe. If so where? Are there any 120V areas using B22?
I thought it amusing looking through a US specialty light bulb site seeing what they charge for B22 based 230-250V light bulbs...nearly ten times the cost of what you buy them here for...admittedly if you want to buy a 120V E27 bulb here it's the same thing.