5-Minute Tech Quiz

Residential Alarm System Basics

1.         End-of-line resistors are not required on residential systems.

a.         True

b.         False

2.         Residential carbon monoxide detector installation is specified in NFPA

a.         730.

b.         70.

c.          72.

d.         720.

3.         Residential control panels are not required to be grounded.

a.         True

b.         False

4.         Glassbreak detectors are not affected by different types of windows.

a.         True

b.         False

5.         Control panels should be powered by a

a.         dedicated branch circuit.

b.         switched branch circuit.

c.          24-hour branch circuit.

d.         Any of the above

6.         Applications for residential burglar alarm installations are specified by

a.         UL 681.

b.         National Electrical Code.

c.          National Fire Alarm Code.

d.         None of the above

e.         All of the above

7.         To increase standby time for a burglar alarm system you

a.         install a larger transformer.

b.         install two batteries in series.

c.          install two batteries in parallel.

d.         do nothing. Manufacturers do not allow power doubling.

8.         Digital dialers can transmit on

a.         MFVN.

b.         POTS.

c.          VOIP.

d.         A & B

e.         A & C

9.       Unlike in a commercial system, control panels are designed to handle the load of any device needed for a residential systems.

a.         True

b.         False

10.         Which of the following types of devices would be considered backup protection?

a.         Contacts

b.         Motion detectors

c.          Digital dialers

d.         Keypad with emergency buttons

11.       When testing, the first signal sent to a monitoring station should be

a.         any burglar alarm signal.

b.         a smoke detector activation.

c.          a hold up signal.

d.         all signals. All signals need to be sent, but it doesn’t matter what order.

12.       Verification means

a.         the control panel analyzes the event prior to sending a signal.

b.         cross zoning of smoke detectors.

c.          one device checks the activation of another.

d.         the monitoring station places a call back to the premise generating the alarm signal.

13.       The purpose of user alarm permits is to

a.         generate revenue for the responding authorities.

b.         know how many alarm systems are in a jurisdiction.

c.          confirm that the alarm is installed by a licensed alarm company.

d.         reduce false alarms.

e.         All of the above

14.       When working on a ladder, the base of the ladder needs to be away from the wall the distance of ____________  the working distance of the ladder.

a.         1/16

b.         1/8

c.          ¼

d.         ½

e.         None of the above

15.       The device used to check the continuity of an burglar alarm circuit  is a(n)

a.         voltmeter.

b.         clamp meter.

c.          ohmmeter.

d.         ammeter.

e.         swinger tester.

What’s Wrong  With This?

A technician was pre-wiring a house for security, audio and other low-voltage systems.    When the building inspector arrived, he “red tagged” the installation after looking at how the technician ran the wires. What did the technician do wrong?

What's Wrong with this?

 

ANSWERS

 

1.         b

2.         d

3.         b — If the control panel has a grounding screw then it is required to be grounded.

4.         b

5.         c — A dedicated circuit is best, but in a residence most outlets will be of the 24-hour type.

6.         d

7.         c — Adding two batteries in parallel doubles the amperage and therefore the standby time.

8.         d

9.         b — Motion detectors help add protection should the perimeter be breached.

10.       b — Improperly overloading a control panel is a major cause of false alarms.

11.       a — Burglar alarm signals are normally verified, so that will tell you if you aren’t properly on test.

12.       d

13.       e

14.       c — For every four feet of rise, the ladder should be one foot away from the wall.

15.       c

Answer to: What's Wrong With This?

The technician failed to properly protect the wires as required in the NEC Section 300.4 from possible physical damage caused by the installation of the sheetrock, other nails, or screws from such things as window treatments. 

What's Wrong with this? Answer

Sdm0511-5minquizquiz-portimg-03

Roy Pollack, CPP, SET, holds Level IV certification in the field of fire alarms from NICET is currently the director of Compliance for Devcon Security Services Corp., Hollywood, Fla., and may be reached at sdmtechtips@bnpmedia.com.

Recent Articles by Roy Pollack

1st Signal Sent?

Jim Sutton
August 04, 2011 10:34 AM
I was shocked to see the answer to Question 11 is a Burglary Signal ("when testing what should be the 1st signal sent to the Monitoring Center?). Around here the rule is SEND A MANUAL TEST! (and if the panel does not have a manual communicator test, program Openings and Closings and send an O or C - after your're done you can deprogram them). Then call the monitoring center and check that you came in on the right account number on the right receiver. (1230 or 123A?!). The corollary to this rule is that you should always listen to your first signal with a Butt Set (and if you aren't carrying a Butt Set then you should). I came to this rule after watching a tech in a class I was teaching try and send signals for 5 minutes with nothing showing up at the reicever. He "checked" everything and tried again and again. Finally I had him put his Butt Set on the line and heard the panel dial and the line get picked up by a very frazzled woman who said "Hello, HELLO, WHO IS THIS?!" BTW my preferred choice of Butt Set is the JDSU LB255 as it will show you which number the panel has dialed as well as the On-Hook and Off-Hook Voltages and Line Current - making it great when trying to diagnose whether the panel won't communicate due to a poor line.


Author's Response

Laura Stepanek
August 09, 2011 1:42 PM
The reason the answer to Question 11 is a burglary signal is for the purposes of false alarm reduction assurance. Any of the other answer choices could result in an immediate dispatch by police/sheriff or fire officials. Under the Enhanced Call Verification rules a burglary signal always should be verified. And this might not just mean a call to the premises; it also might be to the subscriber’s cell phone. A manual test might work on systems that have such a feature, but in general not all do. While a butt set might be fine for legacy systems, for other transmission methods such as long-range radios, mesh networks, and IP communicators, this method won’t work.


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