Re: [RE-wrenches] NABCEP test

My favorite part was when the test results arrived by mail, it had a postage due notice on it. Had to pony up more $$ to tell if I passed or failed!! Glenn Burt From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Nick Vida Sent: F

Re: [RE-wrenches] NABCEP test

Gives a whole new meaning to non-profit. Jim My favorite part was when the test results arrived by mail, it had a postage due notice on it. Had to pony up more $$ to tell if I passed or failed!! Glenn Burt From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@li

[RE-wrenches] 2014 NEC documents

If you have any questions or comments, please respond to me off list. Received this from John Wiles. You may respond to him at . I have put the documents he enclosed on the Wrench ftp site, individually and zipped together. You can find them here: ftp://ftp.re-wrenches.org/pub/ Dear members of

Re: [RE-wrenches] portable freezers

We use Sun Danzer and they're great! Jonathan Hill, senior system design engineerSierra Solar Systems563C Idaho Maryland RoadGrass Valley, CA 95945Celebrating our 30th year in solar!tech info and foreign orders:  (530) 273-6754 order line: (888) ON-SOLAR (US only)   FAX:  (530) 273-1760e-mail:  

[RE-wrenches] Slow clocks

I have an off-grid client who tells me that his clocks lose about 1 minute per hour while he is running his backup generator. Has anyone seen this before? Do clocks use the zero crossing on a 60Hz wave for keeping time and could a frequency discrepency in the generator cause this? My thanks to t

[RE-wrenches] The big valley

Friends: Two weeks ago we had a torrential downpour in our area-- about 4 inches overnight. I received a call Sunday morning from a client who we had installed a roof mount system for almost 5 years ago. Their roof was leaking! I hurried right over in the rain and sure enough, there was a l

Re: [RE-wrenches] Slow clocks

Your assumption is right on. We used to use clocks as an old trick to check the Hz of gensets. Depending on the uinit you may be able to adjust this via the governor. Use a modern Hz meter though, some system monitors or inverters will display Hz as well. >From the Solar, Wind and Hydro powere

Re: [RE-wrenches] Slow clocks

Kristopher, This is not that uncommon on gensets that are close to max output during the bulk charge runup to absorption. If the regulation let's the frequency pull down the clock will slow down also. If the no load frequency is set higher than 60HZ so the motor pulls down to this RPM under heav

[RE-wrenches] Xantrex / Schneider recall update

Just got off the phone with Schneider Electric, formally Xantrex.  They said, "bla bla bla, yada yada yada" and they are hoping our parts will be in by the end of the month.      Andrew Koyaanisqatsi President Solar Energy Solutions, Inc. Since 1987, Moving Portland and Beyond to an Environmen

Re: [RE-wrenches] Xantrex / Schneider recall update

Aw Andrew.. give 'em a break! The parts have to come all the way from China, just like everything else that outfit sells. Bob-O On Apr 4, 2011, at 4:07 PM, Solar Energy Solutions wrote: Just got off the phone with Schneider Electric, formally Xantrex. They said, "bla bla bla, yada yada yada"

Re: [RE-wrenches] Slow clocks

Kris, Even with generators using an electronic governor, the frequency changes with load. Also while inverters are stable their frequency is not as accurate as utility power. Clocks that use the ac frequency as the time standard will not work reliably when powered with off-grid power. Such sh

Re: [RE-wrenches] Slow clocks

I wasn't going to say anything, but electric clocks off-grid? really??? Todd On Monday, April 4, 2011 6:20pm, "Kent Osterberg" said: > Kris, > > Even with generators using an electronic governor, the frequency changes > with load. Also while inverters are stable their frequency is not as > a

Re: [RE-wrenches] Slow clocks

Todd: I guess your off-grid clients don't have commitments, but my clients sometimes have places to go and deadlines to meet. Your point? William Miller At 07:46 PM 4/4/2011, toddc...@finestplanet.com wrote: I wasn't going to say anything, but electric clocks off-grid? really??? Todd ___

Re: [RE-wrenches] Slow clocks

It's not exactly a difficult problem to solve, as $9.95 Walmart 2xAA battery circular clocks with the hands things that turn in circles run for a year on a set, and LCD travel alarms for far longer. The popular ones now have a DC wall wart to power them and you just stick your iPod or iPhone in

Re: [RE-wrenches] Slow clocks

Here in American Samoa the electronic clocks always run fast, a few minutes gained every other day due to high frequency issues (65+Hz) that plague the Island. The local power authority keeps the diesel generators cranked. Hope this help a little. . On Tue, Apr 5, 2011 at 10:51 AM, Kristopher Sch