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Subject Author Date
household voltage results Bob Bins 07-29-2006
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Posted by Bob Bins on July 29, 2006, 9:04 pm
I had my digital volt meter hooked up to two outlets during the day. I
noticed that the voltage is normally around 114 volts. When I have my two
AC window units on it drops to about 109-112. If I then turn my microwave
on it drops to about 102-104. I tested this on two different circuits both
on different sides of the breaker panel. This voltage sounds low to me.
Is this normal or should I be seeing higher values?




Posted by CJT on July 29, 2006, 9:17 pm
Bob Bins wrote:

> I had my digital volt meter hooked up to two outlets during the day. I
> noticed that the voltage is normally around 114 volts. When I have my two
> AC window units on it drops to about 109-112. If I then turn my microwave
> on it drops to about 102-104. I tested this on two different circuits both
> on different sides of the breaker panel. This voltage sounds low to me.
> Is this normal or should I be seeing higher values?
>
>
>
That sounds pretty low to me. I generally get pretty close to 120V.
Even today, with the extreme heat and high loads it brings, I still
have 117V.

Are you sure your meter is right?

--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form che...@prodigy.net.

Posted by Jim Nugent on July 29, 2006, 10:33 pm
> I had my digital volt meter hooked up to two outlets during the day. I
> noticed that the voltage is normally around 114 volts. When I have
> my two AC window units on it drops to about 109-112. If I then turn
> my microwave on it drops to about 102-104. I tested this on two
> different circuits both on different sides of the breaker panel.
> This voltage sounds low to me. Is this normal or should I be seeing
> higher values?

The NEC recommends a voltage drop under load of no more than 5%. If it's
114V with no load, then under load it should be 108V or higher.

Without knowing which appliance is on which circuit or where you are
measuring, I can't comment further.
--
Jim
"Remember, an amateur built the Ark; professionals built the Titanic."



Posted by Jim Nugent on July 29, 2006, 10:34 pm
> I had my digital volt meter hooked up to two outlets during the day. I
> noticed that the voltage is normally around 114 volts. When I have
> my two AC window units on it drops to about 109-112. If I then turn
> my microwave on it drops to about 102-104. I tested this on two
> different circuits both on different sides of the breaker panel.
> This voltage sounds low to me. Is this normal or should I be seeing
> higher values?

The NEC recommends a voltage drop under load of no more than 5%. If it's
114V with no load, then under load it should be 108V or higher.

Without knowing which appliance is on which circuit or where you are
measuring, I can't comment further.
--
Jim
"Remember, an amateur built the Ark; professionals built the Titanic."




Posted by on July 29, 2006, 10:53 pm

Bob Bins wrote:
> I had my digital volt meter hooked up to two outlets during the day. I
> noticed that the voltage is normally around 114 volts. When I have my two
> AC window units on it drops to about 109-112. If I then turn my microwave
> on it drops to about 102-104. I tested this on two different circuits both
> on different sides of the breaker panel. This voltage sounds low to me.
> Is this normal or should I be seeing higher values?
it could be several things. like loose screws in the panel, meter
socket, bad connection on the pole,too many services on one
transformer,undersized service.
try checking your panel connections at the breakers and nuetral bar.
then with breakers off check voltage if its still 114v the power
company might be willing to up your voltage.
i suppose i should recommend you contact an electrician to safely
perform some of these things.


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