[RE-wrenches] Request for Enphase inverter comments

[Marv Dargatz]

Geoff,

Probably the easiest method is to tap into the system ground which is 
already run to the module frame using an irreversible splice.  Some guys 
  run the system ground to the inverters and then irreversibly splice a 
short "pigtail" to the module.  Just be sure to leave a little slack.

Work is afoot to allow use of the WEEB method.  This will ultimately 
simplify the grounding.

See Ya!

Marv
Enphase Energy
707 763-4784 x7016

Geoff Greenfield wrote:
> Thanks Marv (and thanks Michael W. for clarification).  
> 
> Marv - could you comment on the grounding requirements?  Am I correct that I can't just daisy chain inverter chassis grounds and land at a sub-panel AC ground bar? (and that this inverter chasis ground is in addition to the DC module frame/rack grounding we are used to?).
> 
> 
> 
> For a brighter energy future, 
> 
> Geoff Greenfield 
> Chief Executive Officer 
> Third Sun Solar & Wind Power Ltd. 
> 340 West State Street, Unit 25 
> Athens, OH 45701 
> 
> 740.597.3111     Fax 740.597.1548 
> www.Third-Sun.com 
> 
> Clean Energy - Expertly Installed 
> 
> 
> 
> 
> 
> 
> ----- "Marv Dargatz" <mdargatz at enphaseenergy.com> wrote:
> 
>> Wrenches,
>>
>> The Enphase system meets all regulatory requirements for a utility 
>> interactive PV system.  Also, we were very careful and thorough in 
>> making sure that it meets all NEC requirements.  If you run into an
>> AHJ 
>> who has objections, please put them in contact with our Customer
>> Support 
>> people at (877)797-4743.
>>
>> Any new technology raises new questions, and there are always some 
>> doubting Thomas's.  We have been dealing with this on a case by case 
>> basis.  Usually it is just a matter of education.
>>
>> Both Bill Brooks and John Wiles are well aware of our products and
>> their 
>> application in the field.  We can certainly ask for their assistance
>> in 
>> addressing AHJ objections.
>>
>> Regarding disconnects; connectors can serve as disconnects.  Also, 
>> 690.18 specifically allows an opaque covering to disable the module. 
>> This is especially appropriate with a micro-inverter connected to a 
>> single module.
>>
>> Please let me know if I can help.
>>
>> See Ya!
>>
>> Marv
>> Enphase Energy
>> 707 763-4784 x7016
>>
>> Eric Andrews wrote:
>>> Our AHJ has a list of reasons that shoot down even the thought of
>> using
>>> Enphase... including, his requirement for AC and DC discos on each
>>> inverter...
>>>
>>> Eric R. Andrews
>>> NABCEP Certified PV Installer
>>> Eco Solar, Inc.
>>> Klamath Falls, OR 97601
>>>
>>>
>>>
>>> Hi Gang,
>>>
>>> For the number of ads I've seen for the product, I am surprised that
>> there
>>> has been no discussion of the benefits/disadvantages of this micro
>> inverter
>>> product.
>>>
>>> TIA,
>>> Bill Loesch
>>> Solar 1 - Saint Louis Solar
>>> 314 631 1094
>>>
>>> _______________________________________________
>>> List sponsored by Home Power magazine
>>>
>>> List Address: RE-wrenches at lists.re-wrenches.org
>>>
>>> Options & settings:
>>>
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>> List-Archive:
>>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>>
>>> List rules & etiquette:
>>> www.re-wrenches.org/etiquette.htm
>>>
>>> Check out participant bios:
>>> www.members.re-wrenches.org
>>>
>>> _______________________________________________
>>> List sponsored by Home Power magazine
>>>
>>> List Address: RE-wrenches at lists.re-wrenches.org
>>>
>>> Options & settings:
>>>
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>> List-Archive:
>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>> List rules & etiquette:
>>> www.re-wrenches.org/etiquette.htm
>>>
>>> Check out participant bios:
>>> www.members.re-wrenches.org
>>>
>>>
>>>
>> _______________________________________________
>> List sponsored by Home Power magazine
>>
>> List Address: RE-wrenches at lists.re-wrenches.org
>>
>> Options & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>> List-Archive:
>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>> List rules & etiquette:
>> www.re-wrenches.org/etiquette.htm
>>
>> Check out participant bios:
>> www.members.re-wrenches.org
> _______________________________________________
> List sponsored by Home Power magazine
> 
> List Address: RE-wrenches at lists.re-wrenches.org
> 
> Options & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
> 
> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
> 
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
> 
> Check out participant bios:
> www.members.re-wrenches.org
>