If im using bronze explosion proof flex to go to a motor in a class 1div 1 area do I have to have a bonding jumper on the outside of the flex connecting the two ends for continuity? Or since it is threaded am I ok and what code covers this?
Explosion proof flex grounding?
- Thread starter kjroller
- Start date
- Location
- Illinois
- Occupation
- retired electrician
I have never seen an external bonding jumper on the explosion-proof flexible couplings. There is nothing I know of in the code that covers the use of flexible couplings as EGCs. I think it would fall back to the listing.
- Location
- Mission Viejo, CA
- Occupation
- Professional Electrical Engineer
Don used the correct term; I.e., explosionproof flexible coupling.” The key being it is a coupling. It doesn't need an auxiliary bond any more than a standard coupling.