How the quiz works
Each set shows all 18 plan snippets in a shuffled order. Some ask you to name a device symbol: a smoke detector, a pull station, a horn/strobe. Others ask what a tag stands for, such as FACP, EOL or SLC-1. The thing to name is circled. Each question offers four answers: the right one and three that are easy to confuse with it. Check your answer and the explanation tells you what gave it away and why each look-alike doesn't fit.
The symbols follow one consistent style that many legends use. Detectors on the ceiling are circles, wall devices and modules are squares, and a letter gives the type. Appliances carry a setting tag: candela for strobes, watts for speakers. Your score is one point per snippet, out of 18. At the end you get a list of your mix-ups, such as strobe only answered as smoke detector, so you know which pairs to drill. Hit New shuffle for a fresh order. Use the set number if you report an error.
Worked examples
Example 1: smoke detector or strobe?
Step 1: check the shape. It is a square, and it sits against the wall, not out in the ceiling. Step 2: check the tag beside it. It reads 30cd, a candela rating, which only a light has. Step 3: name it. A wall square with S and a candela tag is a strobe only. A smoke detector in this style is a circle with an S out on the ceiling, with no candela tag. Same letter, different device, which is why you read the shape and the tag together.
Example 2: IDC or SLC?
Step 1: see what is on the circuit. Two ceiling detectors, so it is an input circuit, not an appliance circuit. Step 2: look at the far end. The run ends in a resistor, the end-of-line device a conventional circuit needs so the panel can supervise the wiring. Step 3: name the tag. Conventional detectors ending in an EOL make an initiating device circuit, so IDC-1 is zone 1. An addressable signaling line circuit would carry detectors and modules on a loop with no resistor at the end.
Fire alarm device symbols and abbreviations: the reference set
All 18 symbols and tags in the quiz, one snippet each, with the look that identifies it. Read through them once, then go back to the quiz and try to beat your score. Studying for Level I? The Level I exam guide shows where plan reading fits, and the Level 1 practice test covers the rest.
Smoke detector
Heat detector
Duct smoke detector
Manual pull station
Horn/strobe
Strobe only
Speaker
Monitor module
Control module
Fire alarm control panel
Remote annunciator
Waterflow switch
Valve tamper switch
End-of-line device
Notification appliance circuit
Signaling line circuit
Initiating device circuit
Remote booster power supply
Fire alarm symbols FAQ
Are fire alarm symbols the same on every set of drawings?
No. Many firms base their symbols on NFPA 170, Standard for Fire Safety and Emergency Symbols, but each drawing set defines its own in the legend, usually on the first sheet. The style in this quiz is a common one, not the only one. On the job, the legend on the set in front of you is the authority.
Do I need to know symbols for the NICET Level 1 test?
Reading legends, identifying devices and following circuit references sits in the submittal preparation and system layout domain. It is a small share of Level I and a bigger one at Level II. Knowing the device groups and the common abbreviations cold saves you time on any drawing question.
What's the difference between NAC and SLC on a plan?
A NAC feeds notification appliances: horns, strobes and speakers. An SLC is the addressable loop that carries data to and from detectors and modules. On a plan, look at what the circuit connects to. Appliance squares mean NAC; detectors and M or C modules on one loop mean SLC.