Seems like over kill and I too am wondering why use anything but UL listed wire. I always use tinned cable from Cobra. They have the “X FLEX” and the “X FLEX 150” the X flex #2AWG is good for 213 Amps 2/0 is good for 336 Amps. The X FLEX 150 #2AWG is good for 255 and the 2/0 is good for 390 Amps. Let me know off list if you wold like my sales rep, Good quick service. T > On Aug 11, 2020, at 10:34 PM, Glenn Burt <[email protected]> wrote: > > Okay I have to ask, why wouldn’t you want to stick to code compliant battery > cabling? > > From: RE-wrenches <[email protected] > <mailto:[email protected]>> On Behalf Of > [email protected] <mailto:[email protected]> > Sent: Tuesday, August 11, 2020 6:18 PM > To: [email protected] > <mailto:[email protected]> > Subject: [RE-wrenches] Ampacity Ratings for Different Conductors > > I have been designing a off-grid system that can fit in an outside-accessible > compartment with an approximate 24" square footprint and space above about > 18" - 24". > > I am using two Battle Born LiFePO4 batteries rated at 24 V / 50 Ah, a Cotek > pure sine wave inverter with an output power of 4,000 VA , a MorningStar > TS-MPPT-60 charge controller, a Victron BMV-712 "coulomb counter" and a > Battle Born surge limiter CL500. > > The current limiter limits the current to 120 continuous, and 200 A for 30 > sec. > > I have been able to fit everything in and I am designing the cabling, and > here is my problem. > > I have one vendor that recommends Ancor brand Tinned Marine Grade Battery > Cable. It is "resistant to salt water, battery acid, oil, gasoline, heat, > abrasion and ultra-violet radiation. Exceeds UL 1426, ABYC and US Coast Guard > Charter boat (CFR Title 46) standards. Highest quality ultra-flexible (Type > 3) tinned copper stranding. Vinyl insulation. -50 deg-C to 105 deg-C." 2 AWG > is composed of 665 ea 30 AWG stands. > > The same vendor has "welding cable" with an EPDM insulation rated at 600 V, > water/chemical/grease/abrasion resistant, -50 deg-C to 105 deg-C, "marine > grade". Not UL listed. 624 ea 30 AWG strands. > > Roughly comparable pricing. > > They claim both 2 AWG cables are rated at 210 A. Not sure if this is > continuous duty or whether I should derate this for what will be continuous > duty. > > This is new territory for me, and any help would be appreciated. > > Peter T. Parrish, Ph.D. > President, California Solar Engineering > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > <mailto:[email protected]> > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > <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 > <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org> > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm <http://www.re-wrenches.org/etiquette.htm> > > Check out or update participant bios: > www.members.re-wrenches.org <http://www.members.re-wrenches.org/> > [email protected] > <blocked::mailto:[email protected]%22%20%5Co%20%22blocked::mailto:[email protected]> > www.SWNL.net > <blocked::http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/> > Solarwinds Northernlights > Serving Mid Coast Maine & Northern California > 207-832-7574 Cl. 610-517-8401 > > Blair "TUMP" May > ******** MAINE'S CHARTER ******** > NABCEP "Certified PV Installer" > > ******** MAINE'S CHARTER ******** > Trace Xantrex "Certified" Dealer / Installer" >
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