Nov 23, 2011, 7:02 PM
I would not worry about motor driven equipment, especially motor driven equipment which is only used occasionally for short periods of time. A motor might run a little faster on high voltage, or maybe get a little hotter. Sensitive electronics would be more of a concern, especially expensive electronics. If the power supply in the electronics is stout, it should handle it. But the power supply might run hotter, not good for long life of the power supply.
You should, however, buy an inexpensive voltmeter that plugs into the wall, so you can monitor your voltage. I have one for my RV that just lives on the wall, I look over and read the voltage, it gives me a quick reality check, so I know if there is anything to be concerned about. Search for "RV Voltmeter" on Google, or look at Camping World.
As our moderator said, 140 Volts in Mexico is not out of spec in Mexico, even though it would be way out of spec in the USA. If you routinely have over 140 volts, I would be more concerned about refrigerators, air conditioners, etc., equipment that runs a lot.
(This post was edited by raferguson on Nov 23, 2011, 7:04 PM)