[NVDave]

If you’re not noticing transformers, electric motors and such burning up... they didn’t switch.

Going to 40Hz would *guarantee* transformers, motors, etc burn up - within a very short time (like minutes to an hour or two).

[Nowhere Man]

If you’re not noticing transformers, electric motors and such burning up... they didn’t switch.

Going to 40Hz would *guarantee* transformers, motors, etc burn up - within a very short time (like minutes to an hour or two).

True. IIRC, when they made appliances for 25 cycles for the Ontario, Canada and Buffalo, NY areas, the transformers were huge in comparison to ones that can run on 50/60 cycles. 50 to 60 cycles isn't much of a difference but 25 to 60 or even 40 to 60 is and you need the larger transformers to dissipate the added heat you get at 25 or 40 cycles.

The rule of thumb is that you can go up in frequency, you can run 25 cycles appliances at 60 cycles as long as they don't have electric motors, unless it is a multi-frequency type like my grandmother's sweeper. If you had a 25 cycle Canadian TV/radio from the 1950's, it will work fine at 60 cycles but not vice versa.