Regarding NEC Article 250.30 does Informational Note #1 mean that a standard (no battery) grid-tied PV system is not a Separately Derived System?
I'm primarily interested on the consensus view of Bonding the Neutral (grounded conductor) to Equipment Ground in a 60 Amp Fused Disconnect located between the 240VAC inverter output and AC point of connection on the load side of the meter in the service disconnect enclosure in a supply side connected PV system. 250.30 Informational Note 1 reads: "An alternate ac power source, such as an on-site generator, is not a separately derived system if the grounded conductor is solidly interconnected to a service-supplied system grounded conductor." I believe a PV system meets that description as the Neutral stays connected at all times. My interpretation is that a standard net-metered PV system is therefore not a separately derived system and the Neutral should not have a bonding jumper to equipment ground in the Fused Disconnect. Is this the correct interpretation? David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 www.independentpowerllc.com NABCEP Certified PV Installer Vermont Solar Partner 24 Years Experience, (802) 888-7194
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