Intrinsic Safety Piping practices
Intrinsic Safety Piping practices
(OP)
I am a mechanical engineer so i have a dumb electrical question. i need to connect an intrinsically safe ASCO solenoid to an IS Topworx switch box and want to know if there is anything special that i need to do to connect the two and maintain the IS ratings. We typically connect the two items with a NPT nipple and wire the solenoid to the terminal block in the switch box. from what i understand this is acceptable and i would not need any special sealants or fittings in the conduit. is that true?





RE: Intrinsic Safety Piping practices
RE: Intrinsic Safety Piping practices
You also need to supply the switch and the solenoid IS safe energy thru a "safety barrier" device that is outside the IS space.
So, if your switch and solenoid are in the IS space you can use conduit that's non-sealed or special. But if one is outside the space then, again, you need seal the conduit.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Intrinsic Safety Piping practices