Douglas Krantz - Technical Writer - Describing How It Works
Go to the Fire Alarm Home Page of Douglas Krantz -- Describing How It Works
Go to the Fire Alarm Operation Map Page of Douglas Krantz - Technical Writer
Go to the General Electrical Map Page of Douglas Krantz - Technical Writer
Go to the Fire Alarm Description Map Page of Douglas Krantz - Technical Writer
Go to the Fire Alarm Installing Map Page of Douglas Krantz - Technical Writer
Go to the Fire Alarm Maintaining Map Page of Douglas Krantz - Technical Writer
Go to the Fire Alarm Testing Map Page of Douglas Krantz - Technical Writer
Go to the Fire Suppression Map Page of Douglas Krantz - Technical Writer
Go to the Science Article Map Page of Douglas Krantz - Technical Writer
Go to the Writer Home Page of Douglas Krantz -- Describing How It Works
Fire Alarm
Systems
The Fire Alarm System Detects Fire and Tells People About the Fire.
Douglas Krantz -- Fire Alarm Engineering Technician, Electronic Designer, Electronic Technician, Writer


Learn About Fire Alarm Systems

Codes, rules, and laws show what's needed to detect fire and what's needed to tell people about the fire. They don't show how a fire alarm system works.

However, with any fire alarm system, between the Detect Fire and the Tell People is a whole building full of hidden wire and controls. This is what has to be learned about and understood by those people designing, installing, servicing, and testing fire alarm systems.


Conventional Fire Alarm Systems

The Fire Alarm System Detects Fire and Tells People About the Fire.

$24.00
USD

$24.00
USD

Codes and Rules tell you what you should have, but how does a Conventional Fire Alarm System Work?

"Make It Work - Conventional Fire Alarms" provides technical answers to the questions:
  • What is a Fire Alarm System?
  • What is Life-Safety?
  • What are the Types of Fire Alarm System?
  • Is the Fire Alarm System the Box-on-the-Wall?
  • How Does the Box-on-the-Wall Supervise the System?
  • What is a Class B Loop?
  • What is a Class A Loop?
  • What is an Initiating Device Circuit (IDC)?
  • What is a Notification Appliance Circuit (NAC)?
This is not a code book showing the required placement of devices for a fire alarm system; this is a technical book showing how a Conventional Fire Alarm System works.

PDF Book
PDF of Make It Work - Conventional Fire Alarm Systems
PDF of Make It Work - Conventional Fire Alarm Systems


Douglas Krantz

Describing How It Works
facpdoug@douglaskrantz.com

View Douglas Krantz's profile on LinkedIn



Short Circuit
Free Subscription
I'll Send You the
Twice-Monthly
Fire Alarm
Newsletter




Articles

How Does Class A Fire Alarm Wiring Work?-- Fire alarm systems save lives and protect property. Fire alarm systems also break down because... Read More

Just What Is a Signaling Line Circuit (SLC)? -- The SLC (Signaling Line Circuit) is another way of saying Data and Power Circuit. Along with added power to run the sub-computers and their input and output circuits, it's a computer data-buss ... Read More

How is a Buffer Relay Wired Into a Door Holder Circuit? -- Like a door stop, a door holder keeps a fire door open. When smoke is detected, the door holder releases, allowing the door to shut. The door holder looks simple and innocuous enough... Read More

How Does One Find a Soft Ground Fault? -- Normally, we think of resistance like that of a resistor. The amount of resistance is built-in; no matter what voltage is used to drive the electrical... Read More

Can a Magnet Really be Used to Test a Smoke Detector? -- Smoke detectors usually have two ways of being tested. Smoke (smoke particles in the air, or some sort of canned smoke), and magnets (the activation of an internal magnetic... Read More



Electrical Flow


On this website, most references to electrical flow are to the movement of electrons.

Here, electron movement is generally used because it is the electrons that are actually moving. To explain the effects of magnetic forces, the movement of electrons is best.

Conventional current flow, positive charges that appear to be moving in the circuit, will be specified when it is used. The positive electrical forces are not actually moving -- as the electrons are coming and going on an atom, the electrical forces are just loosing or gaining strength. The forces appear to be moving from one atom to the next, but the percieved movement is actually just a result of electron movement. This perceived movement is traveling at a consistent speed, usually around two-thirds the speed of light. To explain the effects of electrostatic forces, the movement of positive charges (conventional current) is best.

See the explanation on which way electricity flows at www.douglaskrantz.com/
ElecElectricalFlow.html
.