2. tech-talk
  3. 1231279328

How much home AC voltage variance is too much?

I have been measuring my AC voltage of my dedicated circuits for my audio system. During the past 24 hours, the voltage has ranged from 121.5 to 122.3 volts. Is this too much variance? Is this too much voltage, given our target is 120? What is an acceptable voltage variation for most high end amps and pre-amps?

I am also wondering whether or not to pursue an AC voltage regulator or regenerator. Additionally, I am considering a balanced power conditioner, such as the BPT 3.5.

Any thoughts would be helpful. Thanks.
banpuku
jea48
2,944 posts
 
Banpuku,
I agree with Zargon......

I have been measuring my AC voltage of my dedicated circuits for my audio system. During the past 24 hours, the voltage has ranged from 121.5 to 122.3 volts.
Loaded? Or without a connected load?
The correct way to measure the voltage at the receptacle is with a load connected to the circuit. Not just at idle but with music playing at a level you normally listen.
The more dynamic the music material the better for a true measurement.
samhar
1,034 posts
 
Mine fluctuates between 116 > 108!!!!
casouza
239 posts
 
I would say you are pretty lucky!
Your household voltage iss stable and not really high.
Enjoy the music!
hevac1
811 posts
 
The National Grid my electric company states within +/- 10% of 208/230Vac residendial and 480Vac commercial. Not responcable for 120 as it is part of 208/230Vac. Brown outs and spikes have to do with condition and load of the system as a whole and have no control over.
jea48
2,944 posts
 

01-07-09: Samhar
Mine fluctuates between 116 > 108!!!!
Sucks to be you! LOL.

Do you have your audio system plugged into a regular 15 amp convenience outlet branch circuit?
Old house or apartment wiring?
More to discover