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Anonymous Poster #1

Electrical Power Voltage Levels

08/30/2011 7:00 AM

Why do we have power voltage levels in steps of 11kv 66kv 132kv.............
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Anonymous Poster #2
#1

Re: Electrical Power Voltage Levels

08/30/2011 7:22 AM

Safety. You can safely touch 132Kv, just check it to see, but if it were 12Kv or 67Kv or 133Kv it would be dangerous.
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Codemaster
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Join Date: Jul 2005
Location: Stoke-on-Trent, UK
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#2

Re: Electrical Power Voltage Levels

08/30/2011 9:13 AM

Not this one again! I only occasionally look at the electrical section but still see this question regularly. Check previous discussions!

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Anonymous Poster #3
#3

Re: Electrical Power Voltage Levels

08/30/2011 9:58 AM

http://cr4.globalspec.com/thread/30380
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JRaef
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United States - Member - New Member Engineering Fields - Power Engineering - New Member

Join Date: Sep 2006
Location: California, USA, where the Godless live next door to God.
Posts: 4665
Good Answers: 804
#4

Re: Electrical Power Voltage Levels

08/30/2011 10:36 AM

It's because a long time ago it used to be multiples of 10, but they needed more power. So they bought some of these and increased it.

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