In order to determine which NEMA rating your line voltage thermostat should have and where you can mount it, you must first understand its’ NEMA rating, and the differences between ratings. In this post, we will explain the differences between these ratings. By following our steps, you can ensure you will purchase the right line voltage thermostat for your application.
Click here to view our collection of NEMA rated Line Voltage Thermostats.
What Is NEMA?
NEMA is described as: “standards that are useful in defining the types of environments in which an electrical enclosure can be used” and is defined by the National Electrical Manufacturers Association. The rating frequently signifies a fixed enclosure’s ability to withstand certain environmental conditions.
All in all, it is important that you purchase the right NEMA rated line voltage thermostat to ensure safe use in the environment you require. Installing a line voltage thermostat outside that is not high on the NEMA rating scale can cause your thermostat to malfunction or cease to work properly.
Steps determine which NEMA rating your line voltage thermostat should have
- First, determine where you want your line voltage thermostat mounted. Do this by looking at its surroundings. For instance, will the thermostat get wet often? Is it exposed to the elements of the outdoors?
- Second, determine what NEMA enclosure your thermostat will need. This article by Bud Industries, Inc. is a great guide and does an excellent job of describing different NEMA ratings.
- Third, locate a line voltage thermostat that best fits the NEMA rating you need for your application. You can see our collection of Tempro Line Voltage Thermostats here.
- Finally, remember that it’s ok if you purchase a higher rated NEMA thermostat than you need. Just be sure it’s equal to or above what your application requires. For example, if your application requires a NEMA 3, you can purchase a NEMA 3 OR anything above, but nothing below a 3.
Line voltage thermostats use a liquid-filled sensing element and capillary. For that reason, they have an exposed or concealed set point dial with adjustable differential, that will switch line voltages.
At Tempro, we offer both a single stage, heat or cool, temperature control and a two stage line voltage thermostat. The two stage line voltage thermostat has two single pole, double throw switches. Each switch uses a liquid filled sensing element and capillary.
Click here to purchase a NEMA rated Line Voltage Thermostat today!