I agree and read it the same way. Not a separately derived system. Jesse
Sent from my iPhone On Jan 23, 2012, at 7:13 PM, "Dave Palumbo" <d...@independentpowerllc.com> wrote: > 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 > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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