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

[Bob-O Schultze, Electron Connection]

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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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