Outside fence grounding

[sharan]

Is it required to ground the fence around air handling units?
Where in Code it is referenced?

 

[Cavie]

I'm going to assume you are referring to A/C compressor units outside. No code reference, not required. Air handler units would the inside 1/2 of the system.

 

[luckylerado]

Is it required to ground the fence around air handling units?
Where in Code it is referenced?

Without additional information, 250.190 could be used to argue that the fence would need to be grounded.

2014
250.190 Grounding of Equipment
(A) Equipment Grounding. All non?current-carrying metal
parts of fixed, portable, and mobile equipment and associated
fences, housings, enclosures, and supporting structures shall be
grounded.

 

[don_resqcapt19]

Without additional information, 250.190 could be used to argue that the fence would need to be grounded.

2014
250.190 Grounding of Equipment
(A) Equipment Grounding. All non?current-carrying metal
parts of fixed, portable, and mobile equipment and associated
fences, housings, enclosures, and supporting structures shall be
grounded.

That would only apply if the AC equipment is operating at a voltage that exceeds 1,000 volts. 250.190 is in part:

X. Grounding of Systems and Circuits of over 1000 Volts

 

[luckylerado]

That would only apply if the AC equipment is operating at a voltage that exceeds 1,000 volts. 250.190 is in part:

Ahh. Good point. Thank you for pointing that out.