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tonyjz

Member
Here's the question, solar panels on two different buildings but the service on a third. Do the two buildings need disconnects on each one?

One building only panels the other has panel and inverters which feed to a third building with the service. More then 60 feet apart.
 

ggunn

PE (Electrical), NABCEP certified
Location
Austin, TX, USA
Occupation
Consulting Electrical Engineer - Photovoltaic Systems
Here's the question, solar panels on two different buildings but the service on a third. Do the two buildings need disconnects on each one?

One building only panels the other has panel and inverters which feed to a third building with the service. More then 60 feet apart.
By code, no, as long as the DC does not go inside the building. Your DC discos can be at (or in) the inverter.
 

ggunn

PE (Electrical), NABCEP certified
Location
Austin, TX, USA
Occupation
Consulting Electrical Engineer - Photovoltaic Systems
Thanks, the fire dept not to happy with that.
Even though it isn't required by code I sometimes use disconnecting combiners when the array is far displaced from the inverter(s) so that there is load break disconnect capability on both ends of the DC run.
 

beanland

Senior Member
Location
Vancouver, WA
Go beyond the code

Go beyond the code

I concur, it may not be code, but provide disconnects at each building for safety and ease of maintenance. The NEC is a MINIMUM.
 
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