How would you know my view when I haven’t expressed it? I’ve only relayed code
requirements. Our views are irrelevant. There are many different ways to
perform a load calculation per the NEC, but using your feeling isn’t one of
them. They are all well defined methods. You must use the full nameplate rating
regardless of your opinion of how much it will ever draw.
You claim to know the limitation of my imagination regarding real world loads?
Recording actual loads, analyzing graphs and numerical data, issuing reports,
and making recommendation based on the real world data is a big part of my
work. I am acutely aware of actual loads versus calculated loads in a wide
variety of applications. How many load recordings have you evaluated?
Jim Smith, EE
KQ6UV
--- On Tue, 8/11/09, Jim Brown <jim@audiosystemsgroup.com> wrote:
From: Jim Brown <jim@audiosystemsgroup.com>
Subject: Re: [Amps] 240V Outlet
To: "AMPS List" <amps@contesting.com>
Date: Tuesday, August 11, 2009, 12:27 AM
On Sun, 9 Aug 2009 22:59:50 -0700 (PDT), jimsmitheguard-a@yahoo.com
wrote:
You have a rather limited view of a world that far more varied than
you imagine. I work in the world of pro audio, and there are many
occasions where a product may be rated for 20A service but have very
dynamic load requirements and draw FAR less current in real world
applications. Audio power amplifiers are a good example -- a big
power amp may draw 15-18A with both channels near clip on sine waves
or very dense audio, but operating them under those conditions would
be VERY rare outside of a test lab. Another example is a series mode
surge suppression rated for 20A, with a 20A plug. There are MANY
other examples that could be cited, none of which justfiy a
dedicated circuit for a single product ONLY because it has a 20A
plug.
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