Re: [RE-wrenches] solid vs stranded AC vs DC

jay peltz wrote: Hi Darryl, But what are the differences and when do they come into play? Question interruptus and my 2 cents worth, Jay... Except for REAL long lines, like utility transmission lines, the AC skin effect, which is what I think you might be referring to here, is probably not

Re: [RE-wrenches] solid vs stranded AC vs DC

Hi Darryl, But what are the differences and when do they come into play? On Jul 31, 2009, at 7:25 PM, Darryl Thayer wrote: Well there is very slight differences between AC and Dc But this difference is so slight that it has no effect on anything we will do. Darryl --- On Fri, 7/31/09, j

Re: [RE-wrenches] Surge protector update?

I ground things well, bond them together and I install "LA's at the array and at the e panel. Then I make the sign of the cross and pray for the best. Also a good idea to change them out every few years we really don't know how hard they work, till they fail. Bob On Fri, Jul 31, 2009 at 2:5

Re: [RE-wrenches] solid vs stranded AC vs DC

Well there is very slight differences between AC and Dc But this difference is so slight that it has no effect on anything we will do. Darryl --- On Fri, 7/31/09, jay peltz wrote: > From: jay peltz > Subject: [RE-wrenches] solid vs stranded AC vs DC > To: "RE-wrenches" > Date: Friday, July

[RE-wrenches] solid vs stranded AC vs DC

HI All, I'm trying to understand this wire issue. Whether or not there is a difference between stranded or solid wire for DC or AC. Any takers on this one? thanks, jay peltz power ___ List sponsored by Home Power magazine List Address: RE-wrenc

Re: [RE-wrenches] fed grant

No. The Recovery Act specifies that Buy America provisions are applicable to ³Division A² programs of the ARRA. The cash grant, according to a resource made available to SEIA members, is a ³Division B² program. David Brearley, Senior Technical Editor SolarPro magazine NABCEP Certified PV Instal

[RE-wrenches] fed grant

In order to get the 30 percent federal grant rather than the 30 percent ITC, is there any requirement that the equipment used be American made? Thanks, marco provision_highres_solar_logo2 with C-26351 Marco Mangelsdorf, President 69 Railroad Avenue, A-7 Hilo, Hawai'i 96720 (808) 969-3281,

Re: [RE-wrenches] Surge protector update?

North Texas Renewable Energy Inc wrote: August I made a service call to a residential PVinstallation several years ago that I did not install. The vintage Trace, size I don't recall, had quit working. The Delta surge suppressor had actually ruptured along it's radial seam, a result I had alway

[RE-wrenches] down-sizing main breaker

if you read 690.64b it does mention both the buss rating AND conductors. for years and years I thought it was just for the buss rating until i got called recently for the feeders being undersized and unable to accommodate the solar within 120%. I see a lot of sentiments in this thread that it is

[RE-wrenches] down-sizing main breaker

if you read 690.64b it does mention both the buss rating AND conductors. for years and years I thought it was just for the buss rating until i got called recently for the feeders being undersized and unable to accommodate the solar within 120%. I see a lot of sentiments in this thread that it is

Re: [RE-wrenches] down-sizing main breaker

Bruce, Use a standard 125-amp panel with a 100-amp main breaker. This is a very common panel and does not require downsizing the main breaker any further (it is already downsized). It allows up to a 50-amp PV breaker. Bill. From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wren

Re: [RE-wrenches] Meggers.

Jay, I bought two insulation testers (Megger is a brand name) in April. A used Fluke 1520 off Ebay for $275 and a new inexpensive (cheap) insulation tester on Amazon (Electronic Specialties 550 Insulation Tester for $162). Both work fine. The Fluke has better accuracy that I need for very speciali

Re: [RE-wrenches] down-sizing main breaker

Hi Bruce, Unless you are leaving something meaningful out of your description, the AHJ is wrong. Your description is fine as far as the code goes. I recommend installing a 100A main in the new 200A panel for local disconnect @ house. Leave 100A main & feeder as-is (assuming safe, properly size

Re: [RE-wrenches] down-sizing main breaker

See Article 220 for load calculation and resulting breaker sizing requirments. Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 www.berkeleysolar.com _ From: re-wrenches-boun...@lists.re-wrenches.org

[RE-wrenches] down-sizing main breaker

Hi Folks, Can anyone provide code reference or advice on this question? Our customer has 100 amp service at the meter pedestal, 100 amp main breaker feeding 200 foot underground run to a 100 amp panel at the house. We need to land a 40 amp breaker, so are proposing to replace main panel at

Re: [RE-wrenches] Surge protector update - UL1449 3rd edition

FYI - I spoke with someone at Delta earlier this week about a service entrance application and was advised that mandatory adoption of UL 1449 3rd edition happens in October. She says that there is language in that standard which (when combined with the 2008 NEC language) makes it nearly imposs

Re: [RE-wrenches] Surge protector update?

In a message dated 7/31/2009 8:00:57 A.M. Pacific Daylight Time, nt...@earthlink.net writes: The Delta surge suppressor had actually ruptured along it's radial seam, a result I had always heard indicates a surge being absorbed. Jim, good new -bad new. The arrestor worked but did not s

Re: [RE-wrenches] Surge protector update?

In a message dated 7/31/2009 7:21:49 A.M. Pacific Daylight Time, aug...@luminalt.com writes: I'm trying to gather a firm opinion on whether they are a complete waste of $$$ and time or not. Good grounding seems I would guess is the best protection. Good grounding #1. I use ac and dc

[RE-wrenches] Meggers.

HI All In trying to round out my electrical tool box, I'm in the market for a Megger. I was wondering what folks are recommending and/or what features to look for? thanks, jay peltz power ___ List sponsored by Home Power magazine List Addr

[RE-wrenches] Surge protector update?

August I made a service call to a residential PVinstallation several years ago that I did not install. The vintage Trace, size I don't recall, had quit working. The Delta surge suppressor had actually ruptured along it's radial seam, a result I had always heard indicates a surge being absorbed.

[RE-wrenches] Surge protector update?

Wrenches -   Anyone have experience with lighning hitting an array with a surge protector installed? What happened?   I'm Here's an ad, point number 5 mentions that the surge protectors installed in the array combiner box "protects solar modules and blocking diodes..."   http://www.citel.us/dc_s