Sprinkler system compressors

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mshields

Senior Member
Location
Boston, MA
Regarding air compressors for a dry sprinkler system fed via a Hospital Essential Electrical System; should they be fed via LS branch (as 517.33(C)(4) which says Mechanical accessories required for effective life safety systems SHALL BE PERMITTED to be...

OR should they, as three phase loads typically are, on the Equipment branch?

By the way, regarding (C)(4) referred to above, would you agree that this bullet should not be under "Alarm and Alerting Systems". Seems ill conceived.
 

LIM

Member
Location
NC
Regarding air compressors for a dry sprinkler system fed via a Hospital Essential Electrical System; should they be fed via LS branch (as 517.33(C)(4) which says Mechanical accessories required for effective life safety systems SHALL BE PERMITTED to be...

OR should they, as three phase loads typically are, on the Equipment branch?

By the way, regarding (C)(4) referred to above, would you agree that this bullet should not be under "Alarm and Alerting Systems". Seems ill conceived.


Needs to be on equipment branch.
 
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