Jerry Historically the utilities require a bladed disco, we had one on a military base which required a breaker by the base but we also were required to install a visible fused disco no breaker because is approved by that utility. Seeing is Believing when it comes to discos. Jerry
On Tue, Oct 3, 2017 at 3:16 PM, Gary Willett <[email protected]> wrote: > Jerry: > > I don't know about PG&E, but here in Texas, a VLLD (Visible Lockable > Labeled AC Disconnect) is required for the PV system AC disconnect. They > want to see a switch on which it can be seen that it is off with the > dead-front cover closed, and that can be locked-out using their lock in the > off position. These requirements usually are fulfilled with a knife switch > type disconnect. > > The PV system AC disconnecting means has to have an SCCR (short circuit > current rating, in kA) that will handle the same available short circuit > current as the main service disconnecting means. Usually, that's readily > achievable with fuses. > > It may be possible to mount a service entrance rated circuit breaker in a > dedicated enclosure (visible/lockable) if PG&E says OK. But then you may > run into NEC 110.10 listing issues unless the enclosure's SCCR is based on > assembly testing by a NRTL to UL 508A. > > > Regards, > > Gary Willett > Icarus Engineering / Solar Services LLC > > > On 10/3/17 12:21 PM, Jerry Caldwell wrote: > >> Dear Wrenches with experience in PG&E territory: >> I'm installing a system with a line side tap. Can I use a small subpanel >> with room for only one circuit breaker instead of a fused disconnect? The >> NEM application, step 2 requires you to select a fused disconnect from >> their list of approved devices. Does anyone have experience with PG&E >> granting a variance on this requirement? >> >> Thanks in advance. Any help is appreciated. >> Jerry Caldwell510.205.2798 >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: http://www.mail-archive.com/re >> [email protected]/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/[email protected] > g/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
