Is it safe for your house to run at 127V to 129V even 130V AC or should you reduce the voltage to 120V?

Answer 1

== == Normal is consider from 110 - 120 volts. But occasionally, for a short time...The voltage falls below normal: a sag. Sags are unlikely to damage most appliances, but they can make a computer crash, confuse some digital clocks and cause VCRs to forget their settings. The reverse of a sag is called a swell or surge: a short duration increase in the line voltage. This disturbance might upset sensitive appliances, and damage them if it is a very large or very long swell. For this reason you need to install a Surge Protector on all sensitive electronics. Computers, Printers, Scanners, Fax, TVs, VCR, DVD, etc. If you are continually running a line voltage of over 120 volts, as measured with a good accurate meter, I suggest you call your electric company immediately. This is not normal, and there may be a problem with the transformer outside your home. <><><>

125 to 130 Volts is the present standard utility voltage

Normal was 110 Volts when I was a kid in the 50s.

I haven't seen anything under 125 volts in years.

The voltages have been raised to accommodate increased loading. <><><>

As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

.