bonding conduit (class 1 zone2)

[DhQ]

hello,
I need your help regarding bonding a raceway in a class 1 zone 2 application.

Do I need to use bonding jumpers when my conduit only runs PLC outputs to actuator like solenoid valves?
On the machine frame are other raceways mounted, they supply AC motors. The frame is grounded on the customer side.

I just add my raceway to this existing frame/raceway... would be very grateful if you can give me the NEC article number, so I can look it up there too.

Thanks very much for your reply and help!


greetings from germany

 

[petersonra]

Do class one zone two really describe the area classification?

Class one division two seems more likely if it's coming to the US.

 

[petersonra]

Incidentally, take a look at 501.30.

 

[don_resqcapt19]

See 505.25(A)

 

[petersonra]

See 505.25(A)

have you actually ever seen an area in the US classified to zones? I haven't.

 

[don_resqcapt19]

have you actually ever seen an area in the US classified to zones? I haven't.

I have not, but the OP mentioned zones. While he did not use the terms correctly, he did use the word zone.

For the purposes of his question, it doesn't matter if it is a zone system or a Class and division system, as the rule you cited and the one I cited say the same thing.

 

[DhQ]

hello,

thank you guys very much for your fast response!

Our customer defined the hazadrous areas as Class I Zone 2 -> therefore article 505.XX

As far as I understood the article 505.25(A) says, I need to provied bonding measueres regardless of the voltage run in the racway.
And the fittings (conduit threaed connectors like bodies; unions; elbows we use LR17 from Eaton Crouse-Hinds for example ) do not provide an suitable connection.
Hence I need Jumpers


Did I get the code passage right, or am I wrong with my interpretation...
Thanks again for your kind help

 

[don_resqcapt19]

...
And the fittings (conduit threaed connectors like bodies; unions; elbows we use LR17 from Eaton Crouse-Hinds for example ) do not provide an suitable connection.
Hence I need Jumpers
...

Threaded connections made up "wrench tight" do not require any additional bonding. Where using threaded conduit, the only additional bonding required is at the conduit terminations.