Explosion Proof Motors in Submersible Pump Lift Stations
Explosion Proof Motors in Submersible Pump Lift Stations
(OP)
Having discussion on the subject with several folks. Some say the pumps are required to have explosion proof motors. Some say they are not. What say you?





RE: Explosion Proof Motors in Submersible Pump Lift Stations
Wastewater Pumping Station Wet Wells are classified as Class 1 Division 1, Group D without venting and can be classified as Class 1 Division 2, Group D with venting creating 12 air changes per hour.
Class 1 areas require FM rated pumps and intrinsically safe electrical sensing equipment, further, Class 1 Division 1 requiring explosion proof equiptment. It is important to consider space classification in Electrical Design and selection of the wet well components.
Find a copy of NFPA 820 or read this:
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RE: Explosion Proof Motors in Submersible Pump Lift Stations
Richard A. Cornelius, P.E.
WWW.amlinereast.com