push buttons/pilot lites in cl1 div2

[markstg]

Is their any way this circuit/components could be considered nonincendive?

 

[Smart $]

In thinking about it, it occurred to me that I am not sure how you could make a pot on its own safe in a div2 area. Something would need to limit the potential for creating an ignition source.

...

That's the purpose of an IS circuit.

 

[Smart $]

Is their any way this circuit/components could be considered nonincendive?

We'd need more information...

 

[petersonra]

Actually, a manufacturer creating a control drawing is a fundamental requirement - see the definition in Section 500.2 and then read Section 504.10(A) in light of that definition.

You know, I have read that section at least a half dozen times and never realized what it actually said.

 

[weressl]

I use the 800H devices with sealed contacts in non-metallic enclosures in Class I, Division 2 areas all the time. They are suitable for that application. The pot will require that the IS barrier be in the non-classified area.

The IS barrier CAN be located in Cl.I, Div.2 location and the pot connected to its 'safe' side THEN can be located in a Cl.I, Div.2 location.