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February 16, 2003

                             ET NEWS
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        NEWS AND INFORMATION FOR ENGINEERING TECHNICIANS
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Issue No. 86           http://www.etnews.org           2-16-2003
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Contents
--------
- News
- ET Journal
- NICET Test Dates
- AFAA Class Schedule
- Comments & Acknowledgements

================================================================
NEWS
================================================================

Thank you for your response to last week's request for licensing
information. If you have information from your State, City,
County, or other fiefdom, please send it to
mailto:mbbaker@etnews.org.

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Yesterday I attended an 8-hour code update class taught by my
favorite electrical inspector, Fred Simmons. Fred does a great
job of making dry code language more easily understood by
incorporating stories of his 30+ years of experience as a
supervising electrician and as an electrical inspector.

If you’re looking for a good NFPA 70-2002 code update class, I
highly recommend Fred's!

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I'm off to Portland this week.

Have fun!

Mike

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ET JOURNAL
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NICET Fire Alarm Systems Level III
35006 PREMISES SIGNAL TRANSMISSION
----------------------------------

35006 is a Level III General Core Work element.

General Work Elements are categorized as either Core or Non-Core
Work Elements. All Level III General Core Work Elements
constitute a mandatory requirement for achieving certification at
Levels III and IV.

35006 DESCRIPTION
Understand how signals and system power are transmitted within a
system at the protected premises in local, auxiliary, remote
station, proprietary, and central station systems. Know which
power and alarm signals can and cannot be transmitted over the
same transmission path, and understand why. (NFPA 72)
 
35006 REFERENCES:
NFPA 72
http://www.nfpa.org/catalog/product.asp?category%5Fname=&pid=7299

35006 DESCRIPTION BREAKDOWN:
"Understand how signals and system power are transmitted within
a system at the protected premises in local, auxiliary, remote
station, proprietary, and central station systems. Know which
power and alarm signals can and cannot be transmitted over the
same transmission path, and understand why."

A class (A or B) and/or style (A or B or C or D or E) designation
is assigned to conventional initiating device circuits (IDC) to
describe the circuit’s fault tolerance in accordance with Table
3-5 in NFPA 72.

An initiating device may be a four-wire or a two-wire type. The
four-wire type device receives power via a separate circuit than
the initiating device circuit. The two-wire type initiating
device derives power from the initiating device circuit.

These conventional initiating device circuits are
"current-sensitive" such that a short-circuit
(very low resistance) will initiate an alarm condition
(except style E).

Because two-wire conventional initiating device circuits are
current sensitive there is a limit to the number of devices
allowed to be connected to a single circuit. The same circuit or
pathway provides alarm signals, trouble signals, and power.

Addressable initiating device circuits, otherwise known as
signaling line circuits (SLC) use multiplexing technology. The
performance of these circuits is identified using a Class (A or B)
and/or Style (0.5 or 1 or 2 or 3 or 3.5 or 4 or 4.5 or 5 or 6 or 7)
designation to describe the circuit’s fault tolerance in
accordance with NFPA 72 Table 3-6. The same circuit or pathway
provides alarm signals, trouble signals, and power. A wire-to-wire
short on the signaling line circuit will initiate a trouble
condition during which time the circuit may or may not retain the
ability to report alarm conditions, dependent upon its fault
tolerance.

A signaling line circuit allows for multiple input signals or
output signals, or both, to be carried on the same path.

The loading of SLC's and IDC's are limited when transmitted to a
proprietary supervising station.

Notification appliance circuits (NAC) provide a pathway for power
and a trouble condition on the same circuit. The performance of
these circuits is identified using a Class (A or B) and/or Style
(W or X or Y or Z) designation to describe the circuit’s fault
tolerance in accordance with NFPA 72 Table 3-7. 


THE INFORMATION HEREIN IS PROVIDED AS A GUIDE ONLY AND IS
INTENDED TO ASSIST YOU IN PREPARING FOR AN EXAM. IT IS NOT
INTENDED TO BE INCLUSIVE OF ALL INFORMATION THAT MAY BE ON AN
EXAM BUT RATHER IT IS INTENDED TO BE A SMALL SAMPLE OF THE KIND
OF MATERIAL THAT YOU MAY BE EXPECTED TO KNOW.

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NICET TEST DATES
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OREGON
------
OR1 PCC Sylvania, Portland;
Test 4/26/03. Postmark deadline 3/8/03.
Test 7/26/03. Postmark deadline 6/7/03.

OR2 Clackamas Community College, Oregon City;
Test 3/15/03. Postmark deadline 2/1/03.
Test 6/21/03. Postmark deadline 5/3/03.

WASHINGTON
----------
WA1 Bates Technical College, Tacoma;
Test 2/22/03. Postmark deadline 1/4/03.
Test 5/17/03. Postmark deadline 3/29/03.

WA2 Walla Walla Community College;
Test 2/22/03. Postmark deadline 1/4/03.
Test 5/17/03. Postmark deadline 3/29/03.

WA3 Spokane Community College;
Test 2/22/03. Postmark deadline 1/4/03.
Test 5/17/03. Postmark deadline 3/29/03.

These dates are from the NICET web site. For a complete list of
all test centers and test dates, visit:
http://63.70.211.210/cfdocs/nicetschedule.cfm

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AFAA CLASS SCHEDULE
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------------------
February 18-20, 2003 Portland, OR - Co-sponsored by Oregon AFAA
------------------
Intermediate Fire Alarm Seminar.
http://www.afaa.org/afaa/PDF/IntFA_Portland_Feb2003.pdf

------------------
February 19-21, 2003 Raleigh, NC 
------------------
Intermediate Fire Alarm Seminar.
http://www.afaa.org/afaa/PDF/IntFA_Raleigh_February2003.pdf

------------------
February 25-27, 2003 Honolulu, HI
Co-sponsored by SFPE Hawaii Chapter 
------------------
Intermediate Fire Alarm Seminar.
http://www.afaa.org/afaa/PDF/IntFA_Honolulu_Feb2003.pdf

------------------
March 11-13, 2003 Dallas, TX - Sponsored by NSCA
------------------
Intermediate Fire Alarm Seminar.
http://www.nsca.org/nscaweb/content/expo2003/attendee/class.asp
?t=4&document=854&a=10&c=2

------------------
March 11-13, 2003 Deerfield Beach, FL (Ft. Lauderdale)
------------------
Intermediate Fire Alarm Seminar.
http://www.afaa.org/afaa/PDF/IntFA_Deerfield_March2003.pdf

------------------
March 17-20, 2003 Oakland, CA - Sponsored by CAFAA
------------------
Fire Alarm System Testing and Inspection Seminar.
More information will be available soon! 
Advanced Fire Alarm Seminar.
More information will be available soon!

------------------
March 25-26, 2003 Las Vegas, NV - Sponsored by ISC West
------------------
Fire Alarm System Testing and Inspection Seminar.
http://www.iscwest.com/App/homepage.cfm?linkid=7623&moduleid=33
1&speakerdetails=speakerdetails&pram=15433&appname=180&date=03/2
5/2003

------------------
April 7-9, 2003 New Orleans, LA - Sponsored by LA AFAA
------------------
Advanced Fire Alarm Seminar.
http://www.afaa.org/afaa/PDF/ADV_NewOrleans_April2003.pdf

------------------
April 22-24, 2003 Richmond, VA - Sponsored by VA AFAA
------------------
Advanced Fire Alarm Seminar.
More information will be available soon!

------------------
April 22-24, 2003 Boise, ID
------------------
Intermediate Fire Alarm Seminar.
http://www.afaa.org/afaa/PDF/IntFA_Boise_April2003.pdf

------------------
April 29-30 & May 1, 2003 Seattle, WA
------------------
Intermediate Fire Alarm Seminar.
http://www.afaa.org/afaa/PDF/IntFA_Seattle_April2003.pdf

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COMMENTS AND ACKNOWLEDGEMENTS
================================================================

ET News is published weekly and if possible, delivered on Sunday

ET News website http://etnews.org by: http://metrodenver.org

----------------------------------------------------------------
The NICET acronym found herein refers to: http://www.nicet.org
NATIONAL INSTITUTE FOR CERTIFICATION IN ENGINEERING TECHNOLOGIES
----------------------------------------------------------------
The AFAA acronym found herein refers to: http://www.afaa.org
AUTOMATIC FIRE ALARM ASSOCIATION "AFAA is celebrating 50 years!"
----------------------------------------------------------------
Some information may be found within this email message that is
reprinted with permission from one or more of the following;
NFPA 70 National Electrical Code(r), NFPA 72 National Fire Alarm
Code(r), and NFPA 101(r) Life Safety Code(r), Copyright(c) NFPA,
Quincy, MA  02269. This reprinted material is not the complete
and official position of the NFPA on the referenced subject,
which is represented only by the standard in its entirety.
================================================================
                 Michael Baker & Associates Inc
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Some information may be found within this web site that is reprinted with permission from one or more of the following: NFPA 70 National Electrical Code®,NFPA 72® National Fire Alarm Code®, & NFPA 101® Life Safety Code®, Copyright© NFPA, Quincy, MA 02269.

This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety.