SP&N = single phase and neutral. This is the sort of supply you find in most domestic houses.
If your man said 3 phase, then this is a very common supply for use in large domestic, and virtually all commercial and industrial properties.
I think I have only ever seen one 2 phase and neutral supply.
If your man said 3 phase, then this is a very common supply for use in large domestic, and virtually all commercial and industrial properties.
I think I have only ever seen one 2 phase and neutral supply.
