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Re: 110, 115, 117, 120 or 125 VAC ???




From: 	Atle Jorstad[SMTP:anjorsta-at-online.no]
Sent: 	Saturday, January 03, 1998 8:38 AM
To: 	Tesla List
Subject: 	Re: 110, 115, 117, 120 or 125 VAC ???

At 10:40 PM 1/2/98 -0600, you wrote:
>
>From: 	Adam[SMTP:absmith-at-tiac-dot-net]
>Sent: 	Friday, January 02, 1998 7:23 PM
>To: 	tesla list
>Subject: 	110, 115, 117, 120 or 125 VAC ???
>
>
>I am curious about mains voltage and equipment ratings.  I have 
>transformers, computers, and all kinds of appliances that can't seem to 
>agree on what voltage they would like to be given.   110, 115, 117, 120 
>and 125 seem to be the most popular values, but why so many subtle 
>variations?  Are these different standards for different parts of the 
>country?  My home's service clearly measures 120.0 VAC, but my newest 
>variac is calibrated for 115V input.  That's why I ask.
>
>Ditto for the 220, 225, 230, 240 VAC appliances.
>

Im not sure, but this might be it: The voltage near a distribution
transformer is higher than far away from it. (I live very close to one, here
its about 245 VAC instead of 230. Light bulbs doesnt last long here :))
Atle Jorstad