[RE-wrenches] Advanced PV Training Recommendations

[SunHarvest]

Wrenchers -

I am in need of hands-on advanced training for my own continuing education. I have a California C46 solar contractor's license and plenty of experience designing and installing systems. But, as you all know, there are always more details to master, code issues to be clarified, and new technologies coming down the pike. I'd like to focus on off-grid and on-grid w/BB systems over straight grid-tie.

I'm looking at Solar Living Institute as that's here in NorCal, where I live.

Are there any training schools/programs that you guys would recommend? 

My main requirements are that the instructor has 20+ years of hands-on experience and that the training is hands-on and fully comprehensive. I am interested in getting NABCEP certified but I'm more concerned with getting professional, in-depth training than with qualifying for NABCEP exam requirements.

Thanks!

Eric
SunHarvest


----- Original Message ----- 
  From: John Berdner 
  To: RE-wrenches 
  Sent: Thursday, April 04, 2013 11:44 AM
  Subject: Re: [RE-wrenches] Combining conductors


  Larry:

   

  Yes, you can parallel conductors (there is an NEC limit on minimum size allowed to parallel).

  You just add the ampacity of the two conductors.

  To convince yourself you can also check Table 8 Conductor Properties and sum the cross sectional areas of all the parallel conductors to see the equivalency to a single larger conductor.

   

  Best Regards,

   

  John Berdner

  General Manager, North America

   

  SolarEdge Technologies, Inc.

  3347 Gateway Boulevard, Fremont CA 94538 USA  (*Please note of our new address.)
  T: 510.498.3200, X 747

  M: 530.277.4894 

   

  From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Larry Crutcher, Starlight Solar Power Systems
  Sent: Thursday, April 04, 2013 9:51 AM
  To: RE-wrenches
  Subject: [RE-wrenches] Combining conductors

   

  Wrenches,

   

  Here's a tough one for me to understand. I am installing 2 volt AGM batteries. There are two terminals for each battery polarity. I have some height limits so I need to use the minimum wire size. Here's my question: If I combine two identical conductors, what is the equivalent single conductor size? 

   

  I found one "rule of thumb" that says doubling like conductors creates a AWG decrease of 3. Example: two #2 will be equivalent to 2/0. Is this true?


  Thank you,


  Larry Crutcher

  Starlight Solar Power Systems

   

   






   

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