NEC 505 and Explosion Proof
NEC 505 and Explosion Proof
(OP)
I have a motor http://www.eng-tips.com/that has a rating as Class 1, Zone 2, IIC, T3.
I've read through NEC 500 and 505. I see the definitions of "Explosion Proof" in 500.02. I see the definitions of the Class, Zone, Material Group, and temperature designation in various sections of NEC 505.
1) Is there a way to tell if this is an "Explosion Proof" motor just from this information?
2) Is there a way to tie the concept of "Explosion Proof" to the "Class, Zone, Gas, and Temp" ratings.
3) On the nameplate there isn't an explosion protection standard (for example: AEx-NEC) nor a method of explosion protection specified on the nameplate.
I've read through NEC 500 and 505. I see the definitions of "Explosion Proof" in 500.02. I see the definitions of the Class, Zone, Material Group, and temperature designation in various sections of NEC 505.
1) Is there a way to tell if this is an "Explosion Proof" motor just from this information?
2) Is there a way to tie the concept of "Explosion Proof" to the "Class, Zone, Gas, and Temp" ratings.
3) On the nameplate there isn't an explosion protection standard (for example: AEx-NEC) nor a method of explosion protection specified on the nameplate.
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RE: NEC 505 and Explosion Proof
In the NEC, a motor that does not have any arc producing contacts does not require any special marking for use in a Class I, Division 2 location.