[Hallicrafters] Did Power Line Voltage Increase from 110 to 120V?

jeremy-ca km1h at jeremy.mv.com
Mon Feb 18 21:25:26 EST 2008


That article had me checking the bottom of my shoes.

At one time there was no US standard; each supplier set his own and it was 
anywhere from 105 to around 130V. My 1928 Radiola 18 has a switch on the PS 
chassis marked 110/120V; this was factory and not an add-on.

A pseudo standard was 110V, then 115V, then 117V as the population grew and 
copper losses added up. Finally 120V was set as a national standard. The 
power companies save millions with higher voltages, note that almost 
everyone will measure in the 122-125V range. Im usually 124V at the end of a 
dead end road in the most remote part of town.

Measure only with a True RMS voltmeter.

Carl
KM1H


----- Original Message ----- 
From: "Jim Hill" <hro5-2 at cox.net>
To: <hallicrafters at mailman.qth.net>
Sent: Monday, February 18, 2008 8:27 PM
Subject: [Hallicrafters] Did Power Line Voltage Increase from 110 to 120V?


> There have been many posts telling how line voltage increased from 110 to 
> 120V over the years, and the bad effects on Hallicrafters and other 
> boatanchor receivers.  Here's an interesting link which sounds like it 
> didn't, or was the voltage 220 in the past?
>
> http://www.faqs.org/faqs/electrical-wiring/part1/section-14.html
>
> Any comments?
>
> Jim
>
> ______________________________________________________________
> 



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