[RE-wrenches] wire management on Qcell AC module

[Dave Tedeyan via RE-wrenches]

Hi All,

I just got some of the Qcell 360w AC modules that have the Enphase
microinverter factory applied to the back. The module is the half cut cell
type with the DC leads coming from either side of the middle of the module.
The modules come with the wires taped to the back of the module. If you
remove that tape, there appears to be almost no way to properly manage
those wires. Is that tape meant to just keep the wire on the back of the
module forever? Would that even last more than a year? I am curious what
other people have done for these if they have used them or something
similar. Maybe if you get the rail in the right spot, the wires will just
sit on the rail...

I realize that we have had a thread on wire management with half cut cell
modules before, but this is a little different, as I am specifically asking
about that tape and if anyone knows if it holds up over time.

Cheers,
Dave

-- 
[image: Logo] 
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com 
c: (607) 288-2898
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Re: [RE-wrenches] wire management on Qcell AC module

[Jason Szumlanski via RE-wrenches]

That's concerning. We just added these to our product offerings. I reviewed
the QCell installation manual for this product and there doesn't seem to be
any guidance on the subject.

Are the DC leads tight enough when connected to the microinverter that they
would not sag enough to touch the roof, or is the tape the only thing
preventing the leads from touching the roof?

Jason Szumlanski
Florida Solar Design Group




On Thu, Jun 2, 2022 at 9:37 AM Dave Tedeyan via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi All,
>
> I just got some of the Qcell 360w AC modules that have the Enphase
> microinverter factory applied to the back. The module is the half cut cell
> type with the DC leads coming from either side of the middle of the module.
> The modules come with the wires taped to the back of the module. If you
> remove that tape, there appears to be almost no way to properly manage
> those wires. Is that tape meant to just keep the wire on the back of the
> module forever? Would that even last more than a year? I am curious what
> other people have done for these if they have used them or something
> similar. Maybe if you get the rail in the right spot, the wires will just
> sit on the rail...
>
> I realize that we have had a thread on wire management with half cut cell
> modules before, but this is a little different, as I am specifically asking
> about that tape and if anyone knows if it holds up over time.
>
> Cheers,
> Dave
>
> --
> [image: Logo] 
> Dave Tedeyan, P.E.
> Owner | Sungineer Solar
> p: he | him | his
> a: 1653 Slaterville Rd. | Ithaca, NY 14850
> w: www.sungineersolar.com 
> c: (607) 288-2898
> ___
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Re: [RE-wrenches] wire management on Qcell AC module

[Dave Tedeyan via RE-wrenches]

I just got a quick look at them on the pallet when they arrived on site
yesterday. We will be starting this installation next week, so I can report
back with more details then.
Cheers,
Dave

On Thu, Jun 2, 2022 at 9:47 AM Jason Szumlanski via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> That's concerning. We just added these to our product offerings. I
> reviewed the QCell installation manual for this product and there doesn't
> seem to be any guidance on the subject.
>
> Are the DC leads tight enough when connected to the microinverter that
> they would not sag enough to touch the roof, or is the tape the only thing
> preventing the leads from touching the roof?
>
> Jason Szumlanski
> Florida Solar Design Group
>
>
>
>
> On Thu, Jun 2, 2022 at 9:37 AM Dave Tedeyan via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi All,
>>
>> I just got some of the Qcell 360w AC modules that have the Enphase
>> microinverter factory applied to the back. The module is the half cut cell
>> type with the DC leads coming from either side of the middle of the module.
>> The modules come with the wires taped to the back of the module. If you
>> remove that tape, there appears to be almost no way to properly manage
>> those wires. Is that tape meant to just keep the wire on the back of the
>> module forever? Would that even last more than a year? I am curious what
>> other people have done for these if they have used them or something
>> similar. Maybe if you get the rail in the right spot, the wires will just
>> sit on the rail...
>>
>> I realize that we have had a thread on wire management with half cut cell
>> modules before, but this is a little different, as I am specifically asking
>> about that tape and if anyone knows if it holds up over time.
>>
>> Cheers,
>> Dave
>>
>> --
>> [image: Logo] 
>> Dave Tedeyan, P.E.
>> Owner | Sungineer Solar
>> p: he | him | his
>> a: 1653 Slaterville Rd. | Ithaca, NY 14850
>> w: www.sungineersolar.com 
>> c: (607) 288-2898
>> ___
>> List sponsored by Redwood Alliance
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Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com 
c: (607) 288-2898
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[RE-wrenches] Schneider Inverter Unbalance

[Drake Chamberlin via RE-wrenches]

Hello Wrenches,

A pair of Schneider XW Pro inverters will not share the load. We had 
used a configuration tool, with the help of Jose at tech support, and 
temporarily got the pair to balance. We adjusted the output voltages so 
that the inverters would share the load.


Later the inverters started drifting. At present, one will take all the 
load until it reaches a point around its maximum production limit. Then 
that inverter will stop production and the other will take over.


Is there a defective inverter? Any ideas at all about what might be 
going on?


Thank you,

Drake

Drake Chamberlin
Athens Electric LLC
Ohio Electrical Contractor’s License 44810
CO Master Electrician’s License 4526
NABCEP Certified PV Installation Professional




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Re: [RE-wrenches] wire management on Qcell AC module

[William Miller via RE-wrenches]

Wrenches:



Consider the vector forces
, even with just the
weight of the wire itself.  Suspended leads are going to strain the
connection points.  I suggest this approach is not a good solution.



William



Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985





*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Jason Szumlanski via RE-wrenches
*Sent:* Thursday, June 2, 2022 6:48 AM
*To:* RE-wrenches
*Cc:* Jason Szumlanski
*Subject:* Re: [RE-wrenches] wire management on Qcell AC module



That's concerning. We just added these to our product offerings. I reviewed
the QCell installation manual for this product and there doesn't seem to be
any guidance on the subject.



Are the DC leads tight enough when connected to the microinverter that they
would not sag enough to touch the roof, or is the tape the only thing
preventing the leads from touching the roof?



Jason Szumlanski

Florida Solar Design Group






On Thu, Jun 2, 2022 at 9:37 AM Dave Tedeyan via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

Hi All,



I just got some of the Qcell 360w AC modules that have the Enphase
microinverter factory applied to the back. The module is the half cut cell
type with the DC leads coming from either side of the middle of the module.
The modules come with the wires taped to the back of the module. If you
remove that tape, there appears to be almost no way to properly manage
those wires. Is that tape meant to just keep the wire on the back of the
module forever? Would that even last more than a year? I am curious what
other people have done for these if they have used them or something
similar. Maybe if you get the rail in the right spot, the wires will just
sit on the rail...



I realize that we have had a thread on wire management with half cut cell
modules before, but this is a little different, as I am specifically asking
about that tape and if anyone knows if it holds up over time.



Cheers,

Dave



-- 

[image: Logo] 


*Dave Tedeyan, P.E.Owner | Sungineer Solar*

*p: *he | him | his
*a: *1653 Slaterville Rd. | Ithaca, NY 14850
*w:* www.sungineersolar.com 
*c:* (607) 288-2898



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Re: [RE-wrenches] wire management on Qcell AC module

[William Miller via RE-wrenches]

Dave:



Could you send a photograph, please?



Indeed this problem has been addressed before.  The only solution presented
was to add jumpers to lengthen the leads so they could be clipped to the
module frames.  This method is sub-optimal due to cost and the adding of
potential failure points.



I can’t answer your question about the tape being a lifetime solution from
an experience or engineering standpoint, but consider this logic:  Based on
our understanding of the environment behind a solar panel, it seems highly
unlikely any kind of tape would last the 25 years required.  Think about
the consequences if you rely on the tape and it fails:  you have to remove
the panels, lengthen the leads, wire manage correctly, and reinstall the
panels.



We tried mounting Enphase inverters to module frames but we aborted and
went right back to rail-mounting the inverters.  Wire management was much
easier for us, especially with Snap-N-Rack rail.



Fortunately for me my local Greentech dealer was willing to bring in a
container of Mission 350 60 cell modules (MSE350SX5T) and I bought as many
pallets as I could fit in my warehouse.  These have both leads emanating
from the short edge.  The leads dress neatly and the panels combine well
into the Outback FM100.  Plus they are US made and an all-around good panel.



I guess my purchase is a small example of market influence.  Based on what
you report we should boycott this product line.  I hope you can return them.



William



Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985





*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Dave Tedeyan via RE-wrenches
*Sent:* Thursday, June 2, 2022 6:38 AM
*To:* RE-wrenches
*Cc:* Dave Tedeyan
*Subject:* [RE-wrenches] wire management on Qcell AC module



Hi All,



I just got some of the Qcell 360w AC modules that have the Enphase
microinverter factory applied to the back. The module is the half cut cell
type with the DC leads coming from either side of the middle of the module.
The modules come with the wires taped to the back of the module. If you
remove that tape, there appears to be almost no way to properly manage
those wires. Is that tape meant to just keep the wire on the back of the
module forever? Would that even last more than a year? I am curious what
other people have done for these if they have used them or something
similar. Maybe if you get the rail in the right spot, the wires will just
sit on the rail...



I realize that we have had a thread on wire management with half cut cell
modules before, but this is a little different, as I am specifically asking
about that tape and if anyone knows if it holds up over time.



Cheers,

Dave



-- 

[image: Logo] 


*Dave Tedeyan, P.E.Owner | Sungineer Solar*

*p: *he | him | his
*a: *1653 Slaterville Rd. | Ithaca, NY 14850
*w:* www.sungineersolar.com 
*c:* (607) 288-2898
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Re: [RE-wrenches] wire management on Qcell AC module

[Jerry Shafer via RE-wrenches]

Regarding the tape on the back sheet
I have seen Novis installers keep the tape to secure the modules and I have
also seen it with the tape stll attached to the wires laying on the roof so
in my humble opinion the tape is for shipping only and is not to be used as
a wire management system.
Jerry
NABCEP PV Inspector

On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi All,
>
> I just got some of the Qcell 360w AC modules that have the Enphase
> microinverter factory applied to the back. The module is the half cut cell
> type with the DC leads coming from either side of the middle of the module.
> The modules come with the wires taped to the back of the module. If you
> remove that tape, there appears to be almost no way to properly manage
> those wires. Is that tape meant to just keep the wire on the back of the
> module forever? Would that even last more than a year? I am curious what
> other people have done for these if they have used them or something
> similar. Maybe if you get the rail in the right spot, the wires will just
> sit on the rail...
>
> I realize that we have had a thread on wire management with half cut cell
> modules before, but this is a little different, as I am specifically asking
> about that tape and if anyone knows if it holds up over time.
>
> Cheers,
> Dave
>
> --
> [image: Logo] 
> Dave Tedeyan, P.E.
> Owner | Sungineer Solar
> p: he | him | his
> a: 1653 Slaterville Rd. | Ithaca, NY 14850
> w: www.sungineersolar.com 
> c: (607) 288-2898
> ___
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Re: [RE-wrenches] wire management on Qcell AC module

[Dave Tedeyan via RE-wrenches]

I didn't snap a photo yesterday, but next week I will certainly take some
photos, and report back on what we figure out. Definitely sounds like tape
is not a permanent solution.
Cheers,
Dave

On Thu, Jun 2, 2022 at 11:39 AM Jerry Shafer 
wrote:

> Regarding the tape on the back sheet
> I have seen Novis installers keep the tape to secure the modules and I
> have also seen it with the tape stll attached to the wires laying on the
> roof so in my humble opinion the tape is for shipping only and is not to be
> used as a wire management system.
> Jerry
> NABCEP PV Inspector
>
> On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> Hi All,
>>
>> I just got some of the Qcell 360w AC modules that have the Enphase
>> microinverter factory applied to the back. The module is the half cut cell
>> type with the DC leads coming from either side of the middle of the module.
>> The modules come with the wires taped to the back of the module. If you
>> remove that tape, there appears to be almost no way to properly manage
>> those wires. Is that tape meant to just keep the wire on the back of the
>> module forever? Would that even last more than a year? I am curious what
>> other people have done for these if they have used them or something
>> similar. Maybe if you get the rail in the right spot, the wires will just
>> sit on the rail...
>>
>> I realize that we have had a thread on wire management with half cut cell
>> modules before, but this is a little different, as I am specifically asking
>> about that tape and if anyone knows if it holds up over time.
>>
>> Cheers,
>> Dave
>>
>> --
>> [image: Logo] 
>> Dave Tedeyan, P.E.
>> Owner | Sungineer Solar
>> p: he | him | his
>> a: 1653 Slaterville Rd. | Ithaca, NY 14850
>> w: www.sungineersolar.com 
>> c: (607) 288-2898
>> ___
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
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Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com 
c: (607) 288-2898
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Re: [RE-wrenches] dual channel charge controllers?

[Jay via RE-wrenches]

Hi Kirk

You didn’t give a lot of info but I don’t think there is a product that meets 
your requirements. 

I’m guessing its either 24v or 48v system with with a  C40 controller. 

Personally I’d leave the old system as 20 year old modules are not cost 
effectively worth messing with. 
And if you did, you’d get what a couple hundred watts more at max maybe?

And then use the CC that best fits your system for the 5kw new. 100 amp, 
midnite or OB or Schneider 

My 2 cents 
Jay

> On Jun 1, 2022, at 3:31 PM, Kirk Herander via RE-wrenches 
>  wrote:
> 
> 
> All,
> I have an off-grid customer adding more PV to their 20 yr old array. It would 
> be s convenient to find a dual channel controller to keep each array 
> separate, instead of sourcing separate new controllers for each array. . The 
> original controller is not mppt. Arrays are 2kw(old Astropowers on roof) and 
> 5kw( bifacials on ground), respectively. Mixing and matching old and new will 
> not work and is bad practice anyway. Thanks.
> -- 
> Kirk Herander / kirkh@vermont.solar
> Owner|Principal, VT Solar, LLC
> Celebrating our 31st Anniversary 1991-2022!!
> www.vermont.solar
> dba Vermont Solar Engineering
> 802.863.1202
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Re: [RE-wrenches] wire management on Qcell AC module

[Jay via RE-wrenches]

These modules are designed for  racking w/o MLPE and the rest of the world that 
doesn’t use MLPE. 

And code in both 300.11 and 330 ish say that wires need to be supported between 
6” and 12” ( I’m not sure which is the correct one to use, I’ve always been 
told to use 12”) from any box or termination. Which means to me that wire 
extensions are required. 
Adapters might be needed anyway If the modules and MLPE don’t have same ends to 
meet both OEM, UL, and NEC requirements. 



Just the way it is, but boy did I wish they made those Junction boxes with wire 
mounting clips on them so we could easily go across the module in the middle 
and be supported. 

Jay






> On Jun 2, 2022, at 9:39 AM, Jerry Shafer via RE-wrenches 
>  wrote:
> 
> 
> Regarding the tape on the back sheet
> I have seen Novis installers keep the tape to secure the modules and I have 
> also seen it with the tape stll attached to the wires laying on the roof so 
> in my humble opinion the tape is for shipping only and is not to be used as a 
> wire management system. 
> Jerry 
> NABCEP PV Inspector
> 
>> On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches 
>>  wrote:
>> Hi All, 
>> 
>> I just got some of the Qcell 360w AC modules that have the Enphase 
>> microinverter factory applied to the back. The module is the half cut cell 
>> type with the DC leads coming from either side of the middle of the module. 
>> The modules come with the wires taped to the back of the module. If you 
>> remove that tape, there appears to be almost no way to properly manage those 
>> wires. Is that tape meant to just keep the wire on the back of the module 
>> forever? Would that even last more than a year? I am curious what other 
>> people have done for these if they have used them or something similar. 
>> Maybe if you get the rail in the right spot, the wires will just sit on the 
>> rail...
>> 
>> I realize that we have had a thread on wire management with half cut cell 
>> modules before, but this is a little different, as I am specifically asking 
>> about that tape and if anyone knows if it holds up over time.
>> 
>> Cheers, 
>> Dave
>> 
>> -- 
>>  
>> Dave Tedeyan, P.E.
>> Owner | Sungineer Solar
>> p: he | him | his
>> a: 1653 Slaterville Rd. | Ithaca, NY 14850
>> w: www.sungineersolar.com
>> c: (607) 288-2898
>> ___
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Re: [RE-wrenches] wire management on Qcell AC module

[Chris Schaefer via RE-wrenches]

G'day All

I rarely do roofs but I can tell you with my pole, ground or DAT projects
it's nearly impossible to cover the modules with a screening product for
safety reasons. I refuse to use the mid panel j-box modules. I'm not one
for boycotts but just use the old school modules with the j-box mounted on
the portrait end. Thus when the modules aren't moving perhaps the
manufactures will reach out and ask us installers/engineers as to why. Yeah
right, lol.

Christopher

On Thu, Jun 2, 2022 at 11:44 AM Dave Tedeyan via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> I didn't snap a photo yesterday, but next week I will certainly take some
> photos, and report back on what we figure out. Definitely sounds like tape
> is not a permanent solution.
> Cheers,
> Dave
>
> On Thu, Jun 2, 2022 at 11:39 AM Jerry Shafer 
> wrote:
>
>> Regarding the tape on the back sheet
>> I have seen Novis installers keep the tape to secure the modules and I
>> have also seen it with the tape stll attached to the wires laying on the
>> roof so in my humble opinion the tape is for shipping only and is not to be
>> used as a wire management system.
>> Jerry
>> NABCEP PV Inspector
>>
>> On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches <
>> re-wrenches@lists.re-wrenches.org> wrote:
>>
>>> Hi All,
>>>
>>> I just got some of the Qcell 360w AC modules that have the Enphase
>>> microinverter factory applied to the back. The module is the half cut cell
>>> type with the DC leads coming from either side of the middle of the module.
>>> The modules come with the wires taped to the back of the module. If you
>>> remove that tape, there appears to be almost no way to properly manage
>>> those wires. Is that tape meant to just keep the wire on the back of the
>>> module forever? Would that even last more than a year? I am curious what
>>> other people have done for these if they have used them or something
>>> similar. Maybe if you get the rail in the right spot, the wires will just
>>> sit on the rail...
>>>
>>> I realize that we have had a thread on wire management with half cut
>>> cell modules before, but this is a little different, as I am specifically
>>> asking about that tape and if anyone knows if it holds up over time.
>>>
>>> Cheers,
>>> Dave
>>>
>>> --
>>> [image: Logo] 
>>> Dave Tedeyan, P.E.
>>> Owner | Sungineer Solar
>>> p: he | him | his
>>> a: 1653 Slaterville Rd. | Ithaca, NY 14850
>>> w: www.sungineersolar.com 
>>> c: (607) 288-2898
>>> ___
>>> List sponsored by Redwood Alliance
>>>
>>> Pay optional member dues here: http://re-wrenches.org
>>>
>>> List Address: RE-wrenches@lists.re-wrenches.org
>>>
>>> Change listserver email address & settings:
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>>> the other:
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>>>
>
> --
> [image: Logo] 
> Dave Tedeyan, P.E.
> Owner | Sungineer Solar
> p: he | him | his
> a: 1653 Slaterville Rd. | Ithaca, NY 14850
> w: www.sungineersolar.com 
> c: (607) 288-2898
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-- 

Chris Schaefer’s


*Tel/Fax 585-229-2083 or Cell 585-748-1870 *
*5115 South Hill Road ~ Canandaigua New York 14424**www.solarandwindfx.com
 ~ E-mail: ch...@solarandwindfx.com
*


Thomas Jefferson, the author of our great Constitution, once said,
"democracy" will cease to exist when you take away from those who are
willing to work and give to those who would not."
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Re: [RE-wrenches] wire management on Qcell AC module

[Dana Orzel via RE-wrenches]

Tape is not approved as a wire retaining device as far as I can find in the NEC 
:-]

 

 

Dana Orzel -  E - d...@solarwork.com -  C - 208.721.7003 

 

From: RE-wrenches  On Behalf Of 
Jerry Shafer via RE-wrenches
Sent: Thursday, June 2, 2022 9:40 AM
To: RE-wrenches 
Cc: Jerry Shafer 
Subject: Re: [RE-wrenches] wire management on Qcell AC module

 

Regarding the tape on the back sheet

I have seen Novis installers keep the tape to secure the modules and I have 
also seen it with the tape stll attached to the wires laying on the roof so in 
my humble opinion the tape is for shipping only and is not to be used as a wire 
management system. 

Jerry 

NABCEP PV Inspector

 

On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org> > 
wrote:

Hi All, 

 

I just got some of the Qcell 360w AC modules that have the Enphase 
microinverter factory applied to the back. The module is the half cut cell type 
with the DC leads coming from either side of the middle of the module. The 
modules come with the wires taped to the back of the module. If you remove that 
tape, there appears to be almost no way to properly manage those wires. Is that 
tape meant to just keep the wire on the back of the module forever? Would that 
even last more than a year? I am curious what other people have done for these 
if they have used them or something similar. Maybe if you get the rail in the 
right spot, the wires will just sit on the rail...

 

I realize that we have had a thread on wire management with half cut cell 
modules before, but this is a little different, as I am specifically asking 
about that tape and if anyone knows if it holds up over time.

 

Cheers, 

Dave


 

-- 


  


Dave Tedeyan, P.E.
Owner | Sungineer Solar


p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w:   www.sungineersolar.com
c: (607) 288-2898



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Re: [RE-wrenches] wire management on Qcell AC module

[Rebekah Hren via RE-wrenches]

Please note we updated 2020 NEC 690.31(C)(1) to allow 24" between
securing/supporting points for PV cable, and removed the problematic
reference to 334.30.

The change was made because as you all know there is not always a way to
secure wires within 12" of a box on the back of a PV module. Of course
wires should definitely not be allowed to touch the roof but the hope is
that 24" allows for proper wire management but with a little more freedom.

2023 NEC will update to 24" for  ≤ 8awg, 54" for >8 awg.  If you disagree,
please let me know and we can work on a public input for 2026.

Best,
Rebekah

Licensed Electrical Contractor
NABCEP Certified Solar PV Installation Professional™ 091209-85
Tel: 336.266.8800



On Thu, Jun 2, 2022 at 10:02 AM Dana Orzel via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Tape is not approved as a wire retaining device as far as I can find in
> the NEC :-]
>
>
>
>
>
> Dana Orzel -  E - d...@solarwork.com -  C - 208.721.7003
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Jerry Shafer via RE-wrenches
> *Sent:* Thursday, June 2, 2022 9:40 AM
> *To:* RE-wrenches 
> *Cc:* Jerry Shafer 
> *Subject:* Re: [RE-wrenches] wire management on Qcell AC module
>
>
>
> Regarding the tape on the back sheet
>
> I have seen Novis installers keep the tape to secure the modules and I
> have also seen it with the tape stll attached to the wires laying on the
> roof so in my humble opinion the tape is for shipping only and is not to be
> used as a wire management system.
>
> Jerry
>
> NABCEP PV Inspector
>
>
>
> On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> Hi All,
>
>
>
> I just got some of the Qcell 360w AC modules that have the Enphase
> microinverter factory applied to the back. The module is the half cut cell
> type with the DC leads coming from either side of the middle of the module.
> The modules come with the wires taped to the back of the module. If you
> remove that tape, there appears to be almost no way to properly manage
> those wires. Is that tape meant to just keep the wire on the back of the
> module forever? Would that even last more than a year? I am curious what
> other people have done for these if they have used them or something
> similar. Maybe if you get the rail in the right spot, the wires will just
> sit on the rail...
>
>
>
> I realize that we have had a thread on wire management with half cut cell
> modules before, but this is a little different, as I am specifically asking
> about that tape and if anyone knows if it holds up over time.
>
>
>
> Cheers,
>
> Dave
>
>
>
> --
>
> [image: Logo] 
>
>
> *Dave Tedeyan, P.E.Owner | Sungineer Solar*
>
> *p: *he | him | his
> *a: *1653 Slaterville Rd. | Ithaca, NY 14850
> *w:* www.sungineersolar.com 
> *c:* (607) 288-2898
>
> ___
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Re: [RE-wrenches] wire management on Qcell AC module

[Jason Szumlanski via RE-wrenches]

Except if it is UL listed and tested as part of the assembly. Haha. I
seriously don't that happened, but technically...

Bottom line, a manufacturer should supply guidance on this.

On Thu, Jun 2, 2022, 1:02 PM Dana Orzel via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Tape is not approved as a wire retaining device as far as I can find in
> the NEC :-]
>
>
>
>
>
> Dana Orzel -  E - d...@solarwork.com -  C - 208.721.7003
>
>
>
> *From:* RE-wrenches  *On
> Behalf Of *Jerry Shafer via RE-wrenches
> *Sent:* Thursday, June 2, 2022 9:40 AM
> *To:* RE-wrenches 
> *Cc:* Jerry Shafer 
> *Subject:* Re: [RE-wrenches] wire management on Qcell AC module
>
>
>
> Regarding the tape on the back sheet
>
> I have seen Novis installers keep the tape to secure the modules and I
> have also seen it with the tape stll attached to the wires laying on the
> roof so in my humble opinion the tape is for shipping only and is not to be
> used as a wire management system.
>
> Jerry
>
> NABCEP PV Inspector
>
>
>
> On Thu, Jun 2, 2022 at 6:37 AM Dave Tedeyan via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> Hi All,
>
>
>
> I just got some of the Qcell 360w AC modules that have the Enphase
> microinverter factory applied to the back. The module is the half cut cell
> type with the DC leads coming from either side of the middle of the module.
> The modules come with the wires taped to the back of the module. If you
> remove that tape, there appears to be almost no way to properly manage
> those wires. Is that tape meant to just keep the wire on the back of the
> module forever? Would that even last more than a year? I am curious what
> other people have done for these if they have used them or something
> similar. Maybe if you get the rail in the right spot, the wires will just
> sit on the rail...
>
>
>
> I realize that we have had a thread on wire management with half cut cell
> modules before, but this is a little different, as I am specifically asking
> about that tape and if anyone knows if it holds up over time.
>
>
>
> Cheers,
>
> Dave
>
>
>
> --
>
> [image: Logo] 
>
>
> *Dave Tedeyan, P.E.Owner | Sungineer Solar*
>
> *p: *he | him | his
> *a: *1653 Slaterville Rd. | Ithaca, NY 14850
> *w:* www.sungineersolar.com 
> *c:* (607) 288-2898
>
> ___
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Re: [RE-wrenches] dual channel charge controllers?

[Kirk Herander via RE-wrenches]

Hi Jay,
It's a recently converted to 48 from 24v system with BI Hi LFP batteries.
And I'd like to see all pv's online, hence my need for an up-to-date
controller(s).
Old controller (it replaced a Heliotrope PWM unit, man that's taking me
back) Is actually an OB MX60, but too old for a hub port. New inverter is
an OB Radian 4048.

On Thu, Jun 2, 2022 at 12:06 PM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Hi Kirk
>
> You didn’t give a lot of info but I don’t think there is a product that
> meets your requirements.
>
> I’m guessing its either 24v or 48v system with with a  C40 controller.
>
> Personally I’d leave the old system as 20 year old modules are not cost
> effectively worth messing with.
> And if you did, you’d get what a couple hundred watts more at max maybe?
>
> And then use the CC that best fits your system for the 5kw new. 100 amp,
> midnite or OB or Schneider
>
> My 2 cents
> Jay
>
> On Jun 1, 2022, at 3:31 PM, Kirk Herander via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
> 
> All,
> I have an off-grid customer adding more PV to their 20 yr old array. It
> would be s convenient to find a dual channel controller to keep each
> array separate, instead of sourcing separate new controllers for each
> array. . The original controller is not mppt. Arrays are 2kw(old
> Astropowers on roof) and 5kw( bifacials on ground), respectively. Mixing
> and matching old and new will not work and is bad practice anyway. Thanks.
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 31st Anniversary 1991-2022!!*
>
> *www.vermont.solar*
> 
>
> dba Vermont Solar Engineering
>
> 802.863.1202
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-- 

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 31st Anniversary 1991-2022!!*

*www.vermont.solar*


dba Vermont Solar Engineering

802.863.1202
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