metal barn grounding question

[guschash]

Do I having to have a ground rod at all four corners of the barn? The reason I'm asking , on pool the inspector had me bond all sides of the pool.

 

[Little Bill]

The pool bonding was for equipotential bonding, a metal barn has no such requirement.

Note: unless the barn is close to the pool!

There is a section for equipotential bonding for agriculture, but just saying a metal barn needs bonding is not a requirement.

 

[Smart $]

Do I having to have a ground rod at all four corners of the barn? The reason I'm asking , on pool the inspector had me bond all sides of the pool.

This is the only requirement that I know of that applies to a metal barn...

250.104 Bonding of Piping Systems and Exposed Structural
Metal.

....

(C) Structural Metal. Exposed structural metal that is interconnected
to form a metal building frame and is not
intentionally grounded or bonded and is likely to become
energized shall be bonded to the service equipment enclosure;
the grounded conductor at the service; the disconnecting
means for buildings or structures supplied by a feeder
or branch circuit; the grounding electrode conductor, if of
sufficient size; or to one or more grounding electrodes used.
The bonding jumper(s) shall be sized in accordance with
Table 250.66 and installed in accordance with 250.64(A),
(B), and (E). The points of attachment of the bonding jumper(
s) shall be accessible unless installed in compliance with
250.68(A), Exception No. 2.