The full wording from the installed battery cable: "4/0 AWG (107.2MM2) TYPE RHH OR RHW-2 2KY (-40C) PR II SUN RES FOR CT USE FT4/IEEE 1202 (UL) E18321 ---A.I.W.-D. --- CSA LL8825 RW90 EP 1 KY (-40C) EP/CPE TC FT4 --- EPR/CPE 2KY DIESLE LOCOMOTIVE CABLE P-07-KA090026-MSHA"
-Phil On Mon, Nov 29, 2010 at 10:40 PM, Philip Boutelle <[email protected]>wrote: > Phil- > Thanks for the clarification; the dual listing makes sense, and I should > have been more clear with my original wording to cover such dual ratings. > I'll be back on-site on Wednesday, at which point I'll notate exactly what > is on the wire.. but from the photos I have: "...OR RHW-2 2KV (-40C) PR II > SUN RES FOR CT USE FT4/IEEE 1202..." then elsewhere "....2KV DIESEL > LOCOMOTIVE CABLE P-..." sorry about the cutoffs, it's all I can read in the > photos. We got this cable from Independent Electric Supply, an electrical > distributor with locations around California. > -Phil > > > On Mon, Nov 29, 2010 at 10:07 PM, Phil Undercuffler > <[email protected]>wrote: > >> My recollection is that MTW is Machine Tool Wire, which indeed is not >> recognized by the NEC. It's an "other" category of wire intended to be used >> by manufacturers as internal wiring on products which they then get listed. >> So a wire with other ratings (such as USE, RHW, THHN) can also have a MTW >> rating and be fine, but a wire with only an MTW rating should not be used as >> field wiring by an installer. >> >> Also, do you have a source for RHW-2 battery cables? Or did you mean to >> say RHW, such as the typical Cobra X-Flex? >> >> Phil Undercuffler >> On Nov 29, 2010 7:41 PM, "Philip Boutelle" <[email protected]> >> wrote: >> > Found the thread, very helpful.... thanks Glenn. >> > The current parallel discussion on Battery Cables REvisited is helpful >> too. >> > The inspector (She, btw) is extremely thorough. Although she has asked >> for >> > proof of purpose-specific listings on just about everything, it seems I >> > misquoted her in my previous post; I looked up her earlier plan review >> > comments, and here's her original quote (from when my plans said to use >> MTW >> > for the battery cable): "MTW is not NEC approved for use". I think that >> to >> > her, if it isn't explicitly in the NEC then I can't use it (lists go >> from >> > being partial & inclusive to complete & limiting). >> > -Phil >> > >> > On Mon, Nov 29, 2010 at 6:03 PM, Glenn Burt <[email protected]> >> wrote: >> > >> >> Hi Phil, >> >> >> >> >> >> >> >> I posted some information that is relevant back in March of 2009. It >> should >> >> be in the searchable archives… >> >> >> >> >> >> >> >> -Glenn Burt >> >> >> >> >> >> >> >> *From:* [email protected] [mailto: >> >> [email protected]] *On Behalf Of *Philip >> Boutelle >> >> *Sent:* Monday, November 29, 2010 8:08 PM >> >> *To:* RE-wrenches >> >> *Subject:* [RE-wrenches] NEC 690.74 >> >> >> >> >> >> >> >> Wrenches, >> >> >> >> >> >> >> >> We have a string of batteries being inspected by a local AHJ. In >> plan-check >> >> comments, I was asked to ensure that the flexible cable was UL-listed, >> so we >> >> made sure of this when it came from the suppliers. We used 4/0 RHW-2. >> Now >> >> our inspector is asking if "RHW-2 is fine-stranded in Article 400 of >> the NEC >> >> as required by 690.74?" >> >> >> >> >> >> >> >> Article 400 doesn't explicitly define any cable types for use in >> battery >> >> systems, and the one general disclaimer is in 400.4: "Types of flexible >> >> cords and flexible cables other than those listed in the table shall be >> the >> >> subject of special investigation". >> >> >> >> >> >> >> >> Has anyone had a similar request before? Anyone done a "special >> >> investigation" on cables, and have results to share? Any other >> thoughts? >> >> >> >> >> >> >> >> Thanks for any help, >> >> >> >> >> >> >> >> -Phil >> >> >> >> Real Goods Solar >> >> >> >> _______________________________________________ >> >> List sponsored by Home Power magazine >> >> >> >> List Address: [email protected] >> >> >> >> 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 >> >> >> >> >> >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: [email protected] >> >> 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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