[RE-wrenches] Convert Grid Tie SW4048 to Backup System; Add New Inverter, AC Coupled

[William Miller]

Joel:

I don't belive it was an NEC thing, it was a UL/ETL consideration.  This 
relates to the NEC only in that it is required to use listed equipment.

William Miller


At 09:21 AM 11/20/2011, you wrote:
>Where in the NEC is the requirement for the GTI interface?