I need a fan to cool an enclosure located in a Class 1 Division 2 rated area. I've found a fan that is "self-certified" by the manufacturer for C1D2 use by virtue of NEC 501.8-B because the motor is "impedance protected". I do not see any reference to "impedance protected" in that section of the NEC. Since no agency (UL, CSA, FM) has tested and approved the fan, I am skeptical. Is an impedance protected motor acceptable for use in a Class 1 Division 2 area?
Impedance protected motor in C1D2 area
- Thread starter oylerrw
- Start date
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charlie
Senior Member
- Location
- Indianapolis
Re: Impedance protected motor in C1D2 area
It is if the AHJ approves the installation. If I were the AHJ, I would ask for a field evaluation from a NRTL.
It is if the AHJ approves the installation. If I were the AHJ, I would ask for a field evaluation from a NRTL.
- Location
- Illinois
- Occupation
- retired electrician
Re: Impedance protected motor in C1D2 area
As long as the motor does not have arc producing contacts, no special listing is required for Class 1, Division 2 locations.
As long as the motor does not have arc producing contacts, no special listing is required for Class 1, Division 2 locations.
Don
charlie
Senior Member
- Location
- Indianapolis
Re: Impedance protected motor in C1D2 area
OOOPS, so much for being so sure of your answer that you don't look it up. It is not good to shoot from the lip.
OOOPS, so much for being so sure of your answer that you don't look it up. It is not good to shoot from the lip.
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