Nevada

Fabrication, installation, alteration, repair and service of fire protection systems using water, including required pressure and storage tanks, fire pumps and drivers, sprinkler heads and nozzles, and all associated valves and piping.  Included in this classification is control wiring, any required excavation, backfilling and grading, and piping to a water supply which is not on the premises but is adjacent to the property with the fire protection system, the fabrication, installation, repair and service of fire protection systems using foam, gas or dry chemicals, including pressurized storage tanks, valves, associated piping and sensing and control devices, the installation, alteration, repair and servicing of electrical sensors and alarms used to detect heat and smoke, including all appurtenances and related wiring.

QUESTION:  "What is the difference between the National Electrical Code (NEC) and the Handbook version?".  As far as the actual NEC code quoted in the text... it's the same.

The NEC Handbook has additional diagrams, graphics and explanations inserted into the text (adding more pages and raising the price).  It was designed for engineers and inspectors.  The typical exam candidate should not use it as a preferred reference.