muckleyd
Member
- Location
- longmont, co
Our design includes non-incendive lights and non-incendive push buttons located in a Class 1 Div 2 hazardous area that receives 24VDC from a I/O printed wiring board located in a safe area. The I/O printed wiring board receives 24VDC from a 20A Phoenix Power Supply also located in the safe area. The Power Supply and the I/O printed wiring board are both non-incendive rated (and could technically reside in a hazardous area).
Do we need to add resistors to our design in the safe area to limit the current of the discrete in/out, or is the idea that all the components in the design are non-incendive proof that the energy will not be enough to cause spark?
Do we need to add resistors to our design in the safe area to limit the current of the discrete in/out, or is the idea that all the components in the design are non-incendive proof that the energy will not be enough to cause spark?