Nevada Administrative Code
Chapter 444 - Sanitation
PUBLIC SPAS
Construction of Spa
Section 444.488 - Pump motors

1. All motors must have as a minimum an open drip-proof enclosure, as defined by National Electrical Manufacturers' Association standards, and be constructed electrically and mechanically so they will perform satisfactorily and safely under the conditions of load and environment normally encountered in spa installations.

2. Motors must be capable of operating pumps under full load, and must have as a minimum a 1.15 service factor. If the maximum service factor of the motor is exceeded at full voltage, the manufacturer shall indicate this on the pump curve.

3. All motors must have thermal overload protection and locked rotor protection, or equivalent, built in or in the line starter, to provide locked rotor and running protection.

4. The motor frame must include adequate provisions for proper grounding.