I agree, fuse it Jerry On Oct 22, 2015 3:26 PM, "Tom Ruscitti" <trusci...@taitem.com> wrote:
> On battery based systems I always install a Class T fuse as close to the > battery bank as possible. 690.71(C) is a little vague in requiring a > current limiting fuse only where the available short-circuit current from > the battery bank exceeds the interrupting ratings of the inverter breaker. > Inverter breakers vary in their interrupting ratings and battery banks are > big current sources when things go wrong, so it's just a sensible best > practice. My question is about service work on systems we didn't install. > We're quoting the second job this year for battery replacement where there > is no current limiting fuse installed. It's always a tough question to > judge what extra work might be required when you touch another contractor's > system, but does anyone have an opinion about recommending or requiring the > installation of a fuse at the battery box as part of the battery > replacement? > > Thanks, > > - Tom > > -- > Tom Ruscitti > Senior Engineer > > Taitem Engineering, PC > 110 S. Albany Street, Ithaca, NY 14850 > Mobile: (607) 220-7022 > www.taitem.com > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > 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-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > >
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