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December 9, 2001

                   Northwest NICET Newsletter 
================================================================
Volume 1 Issue 24                                      12-9-2001
================================================================

        News for Fire Protection Engineering Technicians
        ------------------------------------------------

Contents:
---------
- News
- Tech Crud
- Test Dates
- Class Schedule
- Administrivia

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

As you know, Excite@Home turned off their servers to about a million
broadband subscribers on 12/1. Because of this we have been without
internet service ever since as AT&T struggles to swing customers over to
their servers.

My most recent email address is mbbaker@attbi.com.

----------------------------------------------------------------

2002 test dates have been added to the NICET website
http://www.nicet.org. As always, you will find NW test dates in this
newsletter.

----------------------------------------------------------------

I finished the Level III & IV Element Review Handbook about 2 weeks ago.
I expect a proof copy of the book in about a week and the first printing
to follow shortly thereafter. The books will be available at the
Building Tech Bookstore in Beaverton and CW Cable in Kent.

I am currently working on the III/IV seminar material and will begin
scheduling Saturday Seminars(r) in early 2002.

----------------------------------------------------------------

In light of the most recent announcement by SAI to shut down their
Seattle office, may I suggest a local central station:

Central Station Monitoring
UL(r) listed
Estacada, OR
http://www.csmul.com
(800) 722-0364
(503) 630-2896
Ask for Mike :)

================================================================
TECH CRUD
================================================================

Length o' Wire
--------------

This is project 2 of 2 for those of you attending the seminars at
Clackamas Community College in November. Read through the
example then perform the problem that follows and send it to me. Feel
free to send me the answer even if you didn't attend the seminar. If you
have questions, email me at mailto:mbbaker@attbi.com.

Determine the length of wire in the example using NFPA 70 and a
volt-ohm-meter.
                                                               
            |<-------------  d = ? feet ------------>|

+-----------+      .-.  .-.    .-.  .-.    .-.  .-.     
|+----+   + +--.  /   /     /   /     /   /       
||VOM |     |   /    /    /    /    /    /    `x-<-Twisted
|+----+   - +---'   /     /   /     /   /     /   together
+-----------+     `-'    `-'  `-'    `-'  `-'    `-'     
Simpson(r)
Model 260

Resistance R = 2 ohm
d = wire run distance
L = length of copper wire (two times d)                                

The conductor is 12AWG 7-strand uncoated copper.


Step 1)
-------
If I pull wire on a job site and need to know the wire run length (d) I
just installed, I can twist the pair together at one end, attach my
trusty Simpson(r) Model 260 volt-ohm-milliammeter to the open pair to
determine the resistance in ohms represented by the pair of wires.


Step 2)
-------
In this example, I read 2 ohm of resistance on my meter.


Step 3)
-------
Using Table 8 'Conductor Properties' in NFPA 70-1999 (Chapter 9 page
567) I see that 12AWG 7-strand uncoated copper has 1.98 ohm per 1000
feet (at 167 degrees F) or;

1.98 ohm
--------
1000 ft 


Step 4)
-------
Determine how long this wire run is using the information we've
gathered;

2 ohm   1000 ft    2000 ohm-ft  1010 ft
----- x -------- = ---------- = -------
L       1.98 ohm   1.98 ohm-L    L


Step 5)
-------
Remember that L is the total length of copper and d is the wire run
distance or L/2;

    1010 ft
L = ------- = 505 ft
      2

----------------------------------------------------------------

Try this one on your own:

Determine the length of wire in the example using NFPA 70 and a
volt-ohm-meter.
                                                               
            |<-------------  d = ? feet ------------>|

+-----------+      .-.  .-.    .-.  .-.    .-.  .-.     
|+----+   + +--.  /   /     /   /     /   /       
||VOM |     |   /    /    /    /    /    /    `x-<-Twisted
|+----+   - +---'   /     /   /     /   /     /   together
+-----------+     `-'    `-'  `-'    `-'  `-'    `-'     
Simpson(r)
Model 260 VOM                              

R = 4 ohm
d = wire run distance
L = length of copper wire (two times d)                                

The wire is 10AWG 7-strand uncoated copper.


extra credit:
-------------
The average temperature in this example is 70 degrees Fahrenheit. Does
this affect the calculations? If so, how?

================================================================
TEST DATES 
================================================================

Oregon
------
PCC Sylvania, Portland;
Test 1/26/02. Postmark deadline 12/1/01.

Clackamas Community College, Oregon City;
Test 1/26/02. Postmark deadline 12/1/01.

Washington
----------
Bates Technical College, Tacoma;
Test 2/23/02. Postmark deadline 12/1/01.

Walla Walla Community College;
Test 12/14/01. Postmark deadline 10/27/01.
Test 1/26/02. Postmark deadline 12/1/01.

Spokane Community College;
Test 2/23/02. Postmark deadline 12/1/01.

Idaho
-----
Boise State University;
Test 2/23/02. Postmark deadline 12/1/01.

Brigham Young University, Rexburg;
Test 12/15/01. Postmark deadline 10/27/01.
Test 2/23/02. Postmark deadline 12/1/01.

Montana
-------
Rocky Mountain College, Billings;
Test 1/26/02. Postmark deadline 12/1/01.

Montana Tech, University of Montana, Butte;
Test 1/26/02. Postmark deadline 12/1/01.

MT State University, Bozeman;
Test 12/15/01. Postmark deadline 10/27/01.
Test 1/26/02. Postmark deadline 12/1/01.

Flathead Valley Community College, Kalispell;
Test TBA/02. Postmark deadline 12/1/01.

For a complete list of all test centers and test dates, point your http
browser to -->http://www.nicet.org/tests.shtml

================================================================
CLASS SCHEDULE 
================================================================

Clackamas Community College is sponsoring a 16-hour Saturday
Seminar(r)in January 2002:

--> 1-12-2002 8am - 5pm NICET Certification application process and Fire
Alarm Systems Level I Element Review.

--> 1-19-2002 8am - 5pm Fire Alarm Systems Level II Element Review.

Visit the Limited Energy Resource Center website to register -->
http://www.lerc.org or call Grant Angell at 503-657-0967.

================================================================
ADMINISTRIVIA 
================================================================

Send your contributing articles, suggestions, comments, and questions to
--> mailto:mbbaker@attbi.com

To unsubscribe, click the reply button and type 'unsubscribe' in the
subject line.

Good luck and have fun!

Mike http://go.to./baker

================================================================
Copyright (c) 2001 Michael B. Baker all rights reserved.
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