|Tom Dreesen wrote:
David Hoatson wrote:
An increase from 105 to 120 volts is 15%.
A 15% increase in voltage increases the current 15% also, resulting in a 32% increase in Watts (and heat). 1.15 x 1.15 = 1.32.
Will 32% more power burn up your fan? Maybe. Maybe not.
You can buy a small autotransformer with fixed output taps that can turn 120 into 105 (or so). It works like a Variac. I've never tried it, though.
I have yet to hear of a fire caused by a antique CF. There is a story of one tied down for the winter that got turned on and sat there under power for quite a while without turning. No damage was indicated.
I went to a 3-story antique mall somewhere in Alabama that is full of antique ceiling fans on each floor...2 rows of them per floor. I found the switches and tested them out. On the 3rd floor, there was an R&M H model on the end that was totally frozen up and just humming loudly. It looked like they actually use the fans and just let that one hang there and do that. I recall that the motor was quite warm to the touch, but did not appear to be catching on fire...
Last edited on Fri Jul 17th, 2015 02:52 am by Louis Weedman