Do you design for 110/220 or 120/240 volts? [RE-wrenches]

[Joel Davidson]

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Bob-O,

I also use 120/240. Right now (quiet Saturday morning 8:20am) I measure 
119.4 VAC out of my SX4048 and 122.1 VAC on the grid, but I've seen 95 VAC 
grid voltage a few evenings before Christmas in my urban neighborhood 5 
miles north of LAX.

Joel Davidson

----- Original Message ----- 
From: "Bob-O Schultze, Electron Connection" <econnect at snowcrest.net>
To: <RE-wrenches at topica.com>
Sent: Friday, October 13, 2006 6:53 AM
Subject: Re: Do you design for 110/220 or 120/240 volts? [RE-wrenches]


>
> Hiya Joel,
> Interesting point. I design for 120/240. Most of the grid voltage  I've 
> measured is much closer to 120/240 than the 117/234 which is  supposed to 
> be nominal for the grid. I've seen as low as 115 from the  grid but never 
> 110.
> Cheers, Bob-O
>
> On Oct 12, 2006, at 5:08 PM, Joel Davidson wrote:
>
>>
>> Wrenches,
>>
>> Do you design for 110/220 or 120/240 VAC?
>>
>> From http://www.seed.slb.com/qa2/FAQView.cfm?ID=427 "120 volts is  the 
>> nominal "delivery voltage" at the connection point (e.g. the  meter) 
>> between the utility network and your house. 110 volt is the  standard 
>> "utilization voltage" for most household appliances in  North America. 
>> The 10 volt difference is for voltage drops through  the interior wiring 
>> of the house. In North America, many domestic  electrical appliances have 
>> a "nominal" voltage of 115 volts with a  tolerance of +/-10%."
>>
>> Joel Davidson
>
>
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