penetration in Nema 7 enclosure

[ARenko]

We have a Nema 7x enclosure that will house an electropneumatic proportional valve. The valve runs on 24 vdc, consumes about .3 amps, and receives and sends a 4-20 mA signal. What requirements are there for passing through hose or using bulkhead fittings through the walls to bring in/ out the pneumatic lines and still maintain Class 1 div 2 rating?



Thanks for your help.