Harry .. things have moved in since you looked after your boilers.

The mains these days has some rather "unpleasant" loading on it usually
by semiconductor devices not transformers near saturation. Why is it
that I can clearly see these even late at night when the loading on
substation transformers goes right down?.

Answer me that one if you will..

The electrical load controlled by electronic devices is trivial compared
with total load.



Then why do they cause waveform distortion and why does the mains get
distorted?..

Even with very light transformer loading's?..
--
Tony Sayer

it's not them that does it.



So -what- does it then ?..

Be a bit more specific please...
--
Tony Sayer