ggunn
PE (Electrical), NABCEP certified
- Location
- Austin, TX, USA
- Occupation
- Consulting Electrical Engineer - Photovoltaic Systems
In the case where the utility feeds a feed through panel, and we want to land a PV breaker in the panel on the other end of the feed through conductors, the feed through conductors connecting the panels are essentially an extension of the busbars and are therefore subject to the 120% rule just like the panel busbars, wouldn't you say? Assuming that the conductors have a 90 degree insulator rating, the 90 degree rating derated for conditions of use if necessary of the feed through conductors would be the number to use in that calculation, correct? There are no taps on the feed through conductors between the panels.