Carultch
Senior Member
- Location
- Massachusetts
OK then...until 2017 addresses it specifically(if it does)...this is what I have.
The ungrounded conductors of the output of a DC-to-DC converter are not specifically addressed in article 690 with regard to overcurrent protection.
So we must fall back to article 240 for guidance for overcurrent protection of these ungrounded conductors. Section 240.15(A) requires a fuse or circuit breaker in each ungrounded conductor and 240.21 requires it to be at where the conductor receives its supply.
So the DC-to-DC converter output needs overcurrent protection as required in article 240 where ungrounded conductors receive their supply.
What would "receives their supply" mean in this context? Serious question, because it could be interpreted as from the inverters or from the array.