Outpatient ambulatory

H

hhsting

Senior Member
Location
Glen bunie, md, us
Occupation
Junior plan reviewer
I have outpatient ambulatory that has generator as backup. Their is one 200A ATS that feeds Panel M and S. Panel M has one circuit that feeds life and safety. Rest of the circuits in Panel M are critical or equipment branch. Panel S has all critical branch circuits.

Would NEC 2017 Article 700.3(F) Temporary Source of Power for Maintenance or Repair of the Alternate Source of Power apply here it only has one ATS that is mixed with life safety, critical and equipment branch? Its not life safety alone

fc4016bb44399bd7bf8e1821d35de520.jpg
 
You appear to be in MD. If so, you're on the 2023 NEC which changes things a lot on this. Specifically the 2017 rule where 517 allows article 700. It's very limited after 2017. 2020 NEC and current specifically state which sections of 700 that can be used. So first question is: Are you on the 2017 or later NEC editions as that's super important to understand for life safety or critical branch circuits. Regardless, the answer you're wanting isn't what you'll get most likely. Redundency is an option for specific things, but that redundency comes at a cost. More info is necessary to know for sure.
 
Boingo1972 said:
You appear to be in MD. If so, you're on the 2023 NEC which changes things a lot on this. Specifically the 2017 rule where 517 allows article 700. It's very limited after 2017. 2020 NEC and current specifically state which sections of 700 that can be used. So first question is: Are you on the 2017 or later NEC editions as that's super important to understand for life safety or critical branch circuits. Regardless, the answer you're wanting isn't what you'll get most likely. Redundency is an option for specific things, but that redundency comes at a cost. More info is necessary to know for sure.
Click to expand...

In NEC 2017


Sent from my iPhone using Tapatalk
 
Boingo1972 said:
You appear to be in MD. If so, you're on the 2023 NEC which changes things a lot on this. Specifically the 2017 rule where 517 allows article 700. It's very limited after 2017. 2020 NEC and current specifically state which sections of 700 that can be used. So first question is: Are you on the 2017 or later NEC editions as that's super important to understand for life safety or critical branch circuits. Regardless, the answer you're wanting isn't what you'll get most likely. Redundency is an option for specific things, but that redundency comes at a cost. More info is necessary to know for sure.
Click to expand...

My question is Not about if certain items are allowed to be in life safety circuit or not.

See post #1 about my question
 
When you state outpatient ambulatory is it a outpatient ambulatory surgical center?

What procedures are being performed?

Are there Critical care spaces?

That would make a difference.

If your review has determined an essential system is required (which the drawing has me questioning) and you have a life safety branch I am not seeing anything in Article 517 (517.26) that amends 700.3(F).
 
You must log in or register to reply here.
Top