Wow, that's downright dangerous, having an
extension cord (or flex, as we call them over here),without an Earth conductor,is it legal?
Over here, we use 1.0mm2 2core+Earth in our flexes, as a minimum, this is for domestic use only(This is light-duty insulation).
For any commercial area, we like to use
1.0mm2-1.5mm2, with Ordinary-grade insulation, depending on the length of run,
however, the use of flexes is discouraged,in this type of environment, where people can trip on them, we would normally install more
socket-outlets.
For Industrial sites,there is a requirement to have 1.5mm2 flexes, with Heavy-Duty insulation, this is coloured Yellow, come on to a worksite over here, with an Orange cord, and see what happens.
