JOCKEY PUMP AND DIESEL FIRE PUMP WIRING DIAGRAM
Fire Pump & Jockey Pump Tap Question | Mike Holt's Forum
A pressure switch in the jockey pump controller turns the pump on and off as needed to maintain system pressure. When a sprinkler head goes off or a fire hose valve is opened, the pressure drops further and turns on the fire pump. If the jockey pump has power it will probalby run during the fire, but it won't be doing much.
Electric Jockey Pump with Diesel Fire Pump System (PEDJ
Electric Jockey Pump with Diesel Fire Pump System (PEDJ 50Hz) • Switch Automatically between the three pumps • Can work when the power is off • With quality NSK bearings, wear resistance mechanical seal • Circuit available up on request • Electronic battery charger Chat Now
Supplying power for electric fire pumps - Specifying Engineer
The generator must also be able to support the fire pump auxiliary system, such as a jockey pump, and have a fuel supply that can provide 8 hours of fire pump continuous operation. NEC 2011. The proper installation of electrical fire pumps and associating equipment is the scope of the NEC.
NEC Rules for Fire Pumps | EC&M
Wiring from the fire pump controller to the fire pump motor (not installed through a building, as covered in 695.6(B)) must be in rigid metal conduit, intermediate metal conduit, electrical metallic tubing, liquidtight flexible metal conduit, liquidtight flexible nonmetallic conduit Type B, listed Type MC cable with an impervious covering, or Type MI cable [695.6(D)].
What Are Jockey Pumps and How Do They Work? - Flow Tech News
A jockey pump, also known as a pressure-maintenance pump, is a small apparatus that works together with a fire pump as part of a fire-protection sprinkler system. It is designed to keep the pressure in the system elevated to a specific level when the system is not in use, so that the fire pump doesn’t have to run all the time and the system doesn’t go off randomly.
Consulting - Specifying Engineer | Power for fire pumps
The overcurrent devices may be set as normally required by the code (NEC Table 450.3(A) and Table 450.3(B)), and must be set for indefinite time for LRC of all of the fire pump motors, LRC of the jockey pump, FLA of the associated fire pump accessory equipment, and 100% of the remaining loads.
Fire Pump Controller Wiring Diagram | Free Wiring Diagram
Collection of fire pump controller wiring diagram. A wiring diagram is a simplified standard pictorial representation of an electric circuit. It reveals the elements of the circuit as simplified shapes, and the power as well as signal links between the tools.