Ats feed by outside allow

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hhsting

Senior Member
Location
Glen bunie, md, us
Occupation
Junior plan reviewer
Please see attached sketch. Have bldg #2 feeding bldg #1 thru underground feeder #1.

Bldg #1 has emergency generator, two ATS one standby and one emergency and emergency panelboard and standby panelboard which feed both bldg #1 and bldg #2.

Feeder #2 and feeder #3 feed bldg #1 two ATS from feeder breakers in bldg #2.

Would NEC 2017 section 225 exception allow the feeder #1 & #2 or not?

d89169580f442d1f0750ae78da63885c.jpg
 

hhsting

Senior Member
Location
Glen bunie, md, us
Occupation
Junior plan reviewer
Please see attached sketch. Have bldg #2 feeding bldg #1 thru underground feeder #1.

Bldg #1 has emergency generator, two ATS one standby and one emergency and emergency panelboard and standby panelboard which feed both bldg #1 and bldg #2.

Feeder #2 and feeder #3 feed bldg #1 two ATS from feeder breakers in bldg #2.

Would NEC 2017 section 225 exception allow the feeder #1 & #2 or not?

d89169580f442d1f0750ae78da63885c.jpg

Above should be at the end:

Would NEC 2017 section 225 exception allow the feeder #2 & #3 or not?
 
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