[RE-wrenches] Advanced PV Training Recommendations

August Goers august at luminalt.com
Fri Apr 12 15:39:46 PDT 2013


Eric,



NABCEP just had an annual continuing education conference in Sacramento
with three days of various hands on classes including a good deal focusing
on battery backup systems. It was initially only open to NABCEP certified
folks but registration was eventually opened up to others. You might want
to consider attending next year if they have it again. I certainly got a
lot out of it.



I also like SMA's Sunny Island classes up in Rocklin CA but I don't know
that the instructors necessarily have 20+ years of hands on experience.
You'd have to check on that.





Best,



August



*From:* re-wrenches-bounces at lists.re-wrenches.org [mailto:
re-wrenches-bounces at lists.re-wrenches.org] *On Behalf Of *SunHarvest
*Sent:* Friday, April 12, 2013 12:47 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Advanced PV Training Recommendations



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 <John.Berdner at solaredge.com>

*To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>

*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<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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