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Re: [Amps] Safety grounding - was Mains Isolation Transformer

To: ve3zi@rac.ca, Roger Parsons <ve3zi@yahoo.com>
Subject: Re: [Amps] Safety grounding - was Mains Isolation Transformer
From: R L Measures <r@somis.org>
Date: Wed, 5 Jul 2006 02:18:29 -0700
List-post: <mailto:amps@contesting.com>
Perhaps the same sort of thinkers who decided that 240VCT was a good  
idea also decided that 4 conductors were needed to make 240v circuits  
"safe"?  So who was responsible for the blunder of using 12v in motor  
vehicles instead of 24v?.

On Jul 4, 2006, at 9:30 PM, Roger Parsons wrote:

> This is probably a silly question, but it intrigues
> me:
>
> I can understand why ranges, heaters, AMPLIFIERS and
> other high power devices need a 240V supply, and I can
> understand why in North America that supply is
> balanced around neutral. What I don't understand is
> why, when they decided that ranges needed timers and
> clocks and all the rest, they didn't just power the
> electronics from 240V? After all, most of the rest of
> the world uses 230V for everything.
>
> 73 Roger
> VE3ZI/G3RBP
>
>
>
>       
>       
>               
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R L MEASURES, AG6K. 805-386-3734
r@somis.org



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