Re: Calling all hardware gurus... -- MIDRANGE-L

× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.

Makes perfect sense. I shouldn't do advanced math late at night <grin>.

Joe

Order of operations - square root first then multiplication.
--
Sean Porterfield

-----Original Message-----
From: Raul A. Jager W.
Sent: Wednesday, February 15, 2012 08:18
To: Midrange Systems Technical Discussion
Subject: Re: Calling all hardware gurus...

I think it is just missing a parentesys: (square root of 3) times 120

3-phase power uses one more wire (and a smaller neutral) to carry 3 times the power of a single phase circuit. The "sine waves" in each of the pairs has a 120 degrees difference, and the square root of 3 is the cosine of 120.

Joe Pluta wrote:

On 2/14/2012 7:43 PM, Dan Kimmel wrote:

The nominal voltage between any two phases of 240v three-phase power is 208V. That's the square root of three times the phase-to-neutral voltage where phase-to-neutral voltage is 120V.

I don't know anything about 3-phase power, but 208 isn't the square
root of any small multiple of 120. 208 squared is over 40,000.

Sorry, numbers just appear in my head. (I've gotten used to them, and
they're far less alarming than the voices.)

Joe

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.