Old house electrical question here – the outlets in my home office are on the same circuit as the outlets. When the fax/printer powers up it makes the lights flicker. The electrician I had look at it measured the maximum power draw at about 10 amps – the circuit is not overloaded. He checked thoroughly for loose wires and didn’t find anything.
He suggested that the fax/printer is creating harmonics which interfere with the rest of the circuit and that the way to solve this is to run a separate circuit for the fax printer. Unfortunately, the office is on the 3rd floor and it would require a pipe up the outside of the building – likely $1,500 or so. Seems like a lot to extend the lifespan of a $300 printer and avoid the lights flickering (although he did mention that my computer could be affected too).
I’ve seen that there are filters for harmonics – does anyone know if this is a reasonable residential option? Would a very high quality surge protector solve the problem?