Thanks Bob. I've also had it pointed out to me that the writing on the
sockets themselves is usually oriented ground-up, and some are even marked
TOP with ground-up orientation. Seems to be a preference but not a
requirement.
Jim Eichner, P.Eng.
Manager, Engineering Services
Xantrex Technology
The NEC does not establish an orientation. Proposals to establish an
orientation have been proposed to the code panel and rejected. See
http://electrical-contractor.net/ubb/Forum2/HTML/000553.html
for a discussion.
You will find ground up preferred by some to provide protection as
mentioned by
Jim:
I also could not find anything when I researched this a few years ago.
However, I took a look at a GFI duplex outlet in my home. The words on the
Test and Reset buttons are rightside up only when the ground pin is at the
bottom. This is also how all outlets in my home are installed.
Art and JIm,
One other thing to note: All of the flat (air conditioner type) heavy-
duty cords and extensions I've seen that fit this type socket seem to
be designed for use with the ground pin at the bottom.
Also, although there is some shock hazard from the partially
retracted Hot lead with
Hi Jim,
While there are no references in the CEC and NEC with regards to
installation orientation of Nema 5-15R outlets (they may also be mounted
horizontally), it is a common practice to have the ground pin located in
such a manner as to allow the use of an molded-on angle plug on
extension
Jim -
There are no orientation requirements in the NEC or CEC,
except as required by product marking, such as for some GFCI
receptacles.
Dimension requirements are secret, donchaknow.
Regards,
Peter L. Tarver, PE
Product Safety Manager
Sanmina-SCI Homologation Services
San Jose, CA
Jim,
This also can be affected by the cordage that comes with an appliance.
We have a refrigerator with the ground pin at the bottom. It has to be plugged
in that way because the plug is designed to lay flat against the wall. To put
the plug in the other way would cause the cord to come out
There are hundreds of audio amplifier brands out there but most are designed
for audio applications which means two things so far as your application is
concerned:
the ratings are for continuous operation with speech and music which have a
high average to peak signal voltage ratio
as a
Hi Jim,
I don't have the exact dimensions for the pins but I do have a couple of
these receptacles on my desk.
One is a Hubbell 8200 hospital grade receptacle. The other is a Pass
Seymour 5242 spec grade unit. The markings on these units may provide some
clues of the preferred orientation.
Thanks for the reply Art. I was starting to convince myself that it was
indeed local custom, not code, that determined the orientation.
I heard another explanation that I find amusing and perhaps practical: that
with the ground at the bottom it looks too much like a face and children
will be
Hi Susan,
Actually the industrial line of amplifiers that Crown International
produced had the product line name of Tecron. These are DC
coupled amps and were commonly used for MRI and other
similar applications. I actually have several of the 7560 models
that I would like to sell. They are
Hi Brent,
The following link lists the relationship between U.S. Customs and the FDA
and the only FDA/U.S. Customs rule regarding labeling of country of origin.
http://www.fda.gov/cdrh/manual/ireas.pdf
Hope it helps.
Best regards,
Garry Hojan
CEO/ President
Strategic Compliance Services (SCS)
I have seen some responses for generic audio amps. The Solar Amp you used
was built for a special purpose - to drive a signal into a 2 Ohm load. With
any of these power amps, you should check it has the ability to drive a
clean signal at the necessary power level into whatever load impedance
Hello Jim,
I don't believe the orientation of the U-ground pin is declared anyplace
in the NEC. When I recently approached my local AHJ with this question he
related that it is a matter of custom (locality dependent). In this area,
central Connecticut, the custom is:
For commercial/industrial
A couple of questions about our standard North American 120Vac socket:
1. Orientation: We have lots of people in the office here on both sides of
this one, and I can't find a normative reference in the CEC or the NEC.
Which is the correct way up when installing a socket on a wall - ground
pin
http://www.crownaudio.com has audio amplifiers exceeding 100W.
Ion-implanter manufacturers have been known to use Crown amplifiers as servo
amps for ion deflection coils and plates. Professional musicians attest to
their stability.
David
-Original Message-
From:
HI,
I'm testing a product that's switching at 50 kHz, modulated by a 1 kHz
signal.
I'm getting a great deal of noise between 9 kHz to 13 kHz, I think is
related. Specifically, it goes when I stop the modulation... Any ideas on
ways to clean this up. Filtering seems to be effective, but HUGE!
Hi Susan,
I am not familiar with DO-160D or 461E requirements. However, I am using a
500W audio amp (POWERTRON Model 500A Power Amplifier) from Industrial Test
Equipment Co., Inc., Port Washington, NY 11050 (Phone: 516-883-1700), with
my Helmholtz coil system for frequencies up to 200 kHz.
Bill -
Go to the IEC web site (http://www.iec.ch/index.html). From
Search, select Information on a TC/SC under Technical
Work, then enter 48D when the page loads. You'll see the
chair and secretary names and a link to a list of links to
member states that then link to contacts from whom you
Hello group,
I was hoping that someone could suggest a vendor/model number for an 100
W audio amplifier for use performing DO-160D, change 2, section 18 audio
susceptibility testing. I am currently using an old Solar 6552-1A, but
sometimes it can't provide the pre-calibrated power (100W) into
Try BAPCO for test equipment - http://www.bapcoinfo.com/
Doug Massey
LXE, Inc.
-Original Message-
From: Brian McAuliffe [mailto:i...@mcac.ie]
Sent: Thursday, July 18, 2002 5:48 AM
To: Emc-Pstc Post
Subject: 60601-1 leakage current testers
any recommendations for sources of hire
Check the AAMI site for possible US standards.
http://www.aami.org/
Devices are tested to FDA requirements by Georgia Tech Research Institute.
Contact Jimmy Woody for info.
http://www.gtri.gatech.edu/
A1:1995 of EN 50061:1988 covers immunity of implantable pacemakers.
PrEN 45502-2-1 is a new
Industry (and international) standard as listed by AAMI (Association for the
Advancement of Medical Instrumentation):
IEC 60601-2-31:1994 -- Medical electrical equipment, Part 2: Particular
requirements for the safety of external cardiac pacemakers with internal
power source
Item: Final
Document
Is anyone aware of any radiated immunity standards or test limits for
pacemakers (national, international, or industry)?
Bob Heller
3M Product Safety, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
---
This message is from the
I am out of the office right now. But from memory the FDA country of origin
requirments are covered right at the front of the regs. Something like section
1020, if you are familiar with the laser section which starts around 1040. Then
at the beginning it refrences you back to the section which
Gary,
Sorry. It's Medical Electrical Equipment. Both the MDD and FDA have been
searched with no apparent need for this marking, but this may not be
correct.
-Original Message-
From: owner-emc-p...@majordomo.ieee.org
[mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Garry Hojan
Hello Brent,
Can you let us know the basic category of product? The marking requirements
for Country of Origin vary depending on the product and of course, the
country that the product is intended to be marketed in. There will be two
areas that you might have to address this issue, first in the
Try this link for a start
http://www.customs.ustreas.gov/imp-exp2/import/marking.htm
Robert Sem
Sr. Product Regulations Engineer
Intel Corporation
5200 NE Elam Young Pkwy. MS JF#-410
Hillsboro, OR 97124 U.S.
Phone (503) 264-4430
Fax (503) 264-0124
robert.k@intel.com
-Original
This is not my usual area of interest, but a question came up about
regulations for country of origin marking, either in the US or EU. Can
anyone point me in the direction of an answer?
Thanks all,
Brent DeWitt
Datex-Ohmeda
Louisville, CO
---
This
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