[RE-wrenches] battey back-up questions

I am getting rusty on my battery knowledge as I rarely work with them anymore, so here's a few questions for you battery gurus out there. In back-up systems with flooded batteries, I've always been told it's good to put them through several charge/discharge cycles when they are new to achieve

Re: [RE-wrenches] AC Coupling

Kent, Yes, that is the drawing of a typical installation. Regards, Brian Brian Faley Chief Engineer Magnum Energy 2111 W Casino Rd Everett, WA 98204 425-353-8833 bfa...@magnumenergy.com From: re-wrenches-boun...@lists.re-wrenches.org

[RE-wrenches] 690.31(B) within the photovoltaic array

Wrenches, I am installing Lumeta peel and stick modules (similar to laminates) on a flat EPDM roof. No racking. NEC2008 690.31(B) says single conductor cable listed and labeled as PV wire shall be permitted in exposed outdoor locations...within the array. 690.2 defines array as a mechanically

[RE-wrenches] Grounding Requirement Question

Wrenches, Just installed a Magnum MS-PAE battery based system on an E-Panel distribution box and my inspector seems to have an issue with the grounding. He is saying that I must run an additional GEC down to the ground rod because I am dealing with two separate grounding systems. The DC

Re: [RE-wrenches] 690.31(B) within the photovoltaic array

The idea of within the array goes to the idea that the conductors will be located on the underside of an array of traditional framed moduled and will be afforded a modicum of protection from physical damage by the module itself. So the issue is one of physical protection of the conductors. That

Re: [RE-wrenches] 690.31(B) within the photovoltaic array

Lumeta dealer has been sending links for unlisted wire management systems, nothing from Lumeta itself. Cooper B-Line EnviroShield is listed and is an easier drop in raceway but very expensive. On Tue, Sep 6, 2011 at 4:02 PM, Mark Frye ma...@berkeleysolar.com wrote: ** The idea of within the

Re: [RE-wrenches] Grounding Requirement Question

Aaron, I am still back at NEC 2008 on this but see 690.47 (C), especially (3) ..a single conductor shall be permitted to be used to perform the multiple functions of dc grounding, ac grouding,.(5) a common buss bar shall be permitted to be used for both systems (6) a common grounding

Re: [RE-wrenches] Grounding Requirement Question

I think 690.47 C 3 covers this in the new 2011 code. The info notes 1 2 also yield more clarification. As always confusion reins until we get some actual interpretation from Bill Brooks or John Wiles, as all of this was completely rewritten. Feel free to correct me, any and everyone, but this