Re: [RE-wrenches] Top of Pole Mount Array on Ledge

[palumbo131m]

Ben, 
There is a way if the ledge is solid and true. Twice I have done the following 
with ledge at 18” to 24” below grade. Excavate down to ledge, drill down into 
the ledge and you will determine the suitability of the following method. Drill 
for a pattern of many rebar penetrations in to the ledge. Drill to a reasonable 
depth (as deep into the ledge as you are able) in my case it was based on our 
drilling tool and bit length capabilities. We used a large sono tube. 42” as a 
recall, both of these jobs were over 12 years ago and my recall on the exact 
size may be off. 
Determine the best adhesive product to use in your drilled holes for the rebar, 
again my memory fails as to what we used based on recommendation from a local 
civil engineer. The sono tube height above grade was determined to be 2’ for 
one TPM12 and 3.5’ above grade for a TPM16. Depth down to the ledge determines 
how high above grade you need the concrete footing/base. Use rebar lengths that 
will end a few inches below the finished surface. For grounding you can coil up 
ground wire and lay it on the surface of the ledge before your concrete pour. I 
ran the ground wire through a short length of 1/2” or 3/4” PVC conduit, to 
protect the copper ground wire where it comes out of the concrete. Place the 
conduit coming out of the concrete with the ground wire just to the side of 
where the mounting plate base for the TPM will be and fill the PVC conduit with 
a good caulk sealer to keep air and water out of this hole as a nexus of 
concrete, and air will corrode the copper. The TPM’s for those two jobs were 
made of 8” SCHD 80 steel, we had a large plate welded to the bottom with 4 
vertical side supports on the pipe up about a foot. Place the appropriate sized 
anchor bolts in the concrete pour to match your TPM base. Both of these TPM’s 
have worked out well over the years. Local conditions will determine the 
suitability of this method.


Sent from my iPhone

> On Jun 23, 2021, at 6:39 PM, Ben's Solar and Battery  
> wrote:
> 
> Hi Wrenches,
> 
> We typically use SunModo ground mounts with ground screws which we can put 
> just about anywhere as our screw guy has a rock drill.  
> We have one customer who is dead set on a top of pole mount array and will 
> not settle for a typical ground mount with multiple posts.  
> There is shallow ledge all over her property and we feel that digging 
> multiple large holes to find one spot where we might be able to get deep 
> enough would be a waste of time and resources.  We have called an underground 
> locator who uses ground penetrating radar and he scanned a few spots, but was 
> unable to give us a good location based on soil types.   
> What are you guys doing in this situation?  Are there any alternatives, such 
> as a pole mount with large base and ground screws?
> I hate saying it can't be done! 
> 
> Thanks! 
> Ben 
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[RE-wrenches] Magnum MM1524AE rebuild?

[palumbo131m]

Is a Magnum MM1524AE inverter/charger repairable and if so by whom? 

It failed after being reconnected to a battery bank, the typical small spark
at the battery terminal when being reconnected was accompanied by a popping
sound in the Magnum. Killed the Magnum.

 

Dave Palumbo

Hyde Park, VT 

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[RE-wrenches] OB VFX3524M vs regular VFX

[palumbo131m]

I'm going to be upgrading on old dual inverter OutBack FX 2524 system to
dual VFX3524 inverters and would prefer to not use the new R series as I
have heard about problems with them.

I have located only one reconditioned VFX3524 so far but I see that there
are VFX3524M Marine version's available. I have no experience with the
Marine version. Can the Marine model work in an off grid home?

I see in the spec sheet that the VFX3524M has a listed AC Input Current Max
of 30A while the regular VFX3524 is listed at 60A.

 

Dave Palumbo

Hyde Park, VT

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[RE-wrenches] OutBack Inverters

[palumbo131m]

I am considering swapping in new OutBack inverters into one of my
neighborhoods 24V off grid systems. It now has two FX2524's. The demands on
the system have grown, now a two family home with a 240Vac mini-split for
air conditioning and a 240Vac Grundfos SQ 1/2hp sub pump to be added this
summer to the system. Drilling a well for a back-up to the gravity fed
spring water which has been getting too low during the past few summers. 

I'm assuming that I should go with two VFXR3524's.

Will this be a direct swap in as far as having the same wiring setup into an
OutBack Flexware system? And will it work with an older Mate?

Anything else I should know about these OutBack "R" inverters?

 

Dave Palumbo

Hyde Park, VT

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[RE-wrenches] OutBack inverter repair

[palumbo131m]

I am needing a recommendation for businesses that repair OutBack inverters.

 

Also, businesses that sell refurbished OutBack inverters.

 

Thanks,

 

Dave Palumbo

Independent Power

Hyde Park, VT

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Re: [RE-wrenches] Evergreen ES190

[palumbo131m]

Hi Howie,

I just checked my inventory in the barn on Evergreen modules. All never used.

*   (5) ES-180 RL
*   (1) ES-190 RL
*   (1) ES-195 RL
*   (3) ES-A-205 fa3

I would like $ 2 per watt. No shipping, you must pick up. No credit cards. Cash 
or check only.

 

Dave Palumbo

462 Solar Way Dr

Hyde Park, VT 05655

802-371-8678 voice or text

802-888-4917 land line

 

From: RE-wrenches  On Behalf Of 
Howie Michaelson
Sent: Monday, July 13, 2020 8:56 AM
To: RE-wrenches 
Subject: [RE-wrenches] Evergreen ES190

 

Does anyone have a lead on an Evergreen ES190. I have a client in Vermont that 
has a broken panel they are looking to replace.

TIA,
Howie

Howie Michaelson
Sun Catcher
NABCEP Certified Solar PV Installer™
Solar Electric & Heat Pumps Systems Sales & Service
802-272-0004

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Re: [RE-wrenches] Evergreen ES190

[palumbo131m]

Howie,

 

I have a few ES-180’s and 190’s in stock. Contact me off list. 

 

David Palumbo

Email: palumbo1...@gmail.com  

802-888-4917 land line

802-371-8678 voice & text

 

From: RE-wrenches  On Behalf Of 
Howie Michaelson
Sent: Monday, July 13, 2020 8:56 AM
To: RE-wrenches 
Subject: [RE-wrenches] Evergreen ES190

 

Does anyone have a lead on an Evergreen ES190. I have a client in Vermont that 
has a broken panel they are looking to replace.

TIA,
Howie

Howie Michaelson
Sun Catcher
NABCEP Certified Solar PV Installer™
Solar Electric & Heat Pumps Systems Sales & Service
802-272-0004

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Re: [RE-wrenches] Large off-grid inverter/storage

[palumbo131m]

Is “25 Kw per hour” a real value? For us old school people there is kW and they 
is kWh (kilowatt hours). I’m guessing that it is 25 kWh per average day, or, 
about 750 KWh / month.
Dave Palumbo 
Hyde Park, VT

Sent from my iPhone

> On Sep 5, 2019, at 5:15 PM, Andrew  wrote:
> 
> Hey Everyone,
> I have been recently been getting more and more inquiries for 
> some quite large off-grid sytems(25kw per hour) and seeing what you guys have 
> for suggestions on bigger inverters and storage systems?  I could do 2 triple 
> stack Schneider’s and a bunch of HUPS industrial batteries but it all just 
> takes up so much space and I know there are some other companies out there 
> with package units. Thoughts?
>  
> Andrew Perkins
> Greenwired
> P: 707-923-2001 ext. 100
> 1150 #1 Evergreen Rd
> Redway, CA 95560
> www.greenwired.com
> 
>  
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Re: [RE-wrenches] GENERAC EcoGen 6kw problem

[palumbo131m]

Thank you all for your help. Ray gets the gold star long distance diagnostics 
award as it was simply a thin layer of ice underneath the air cleaner. I 
cleared that out and it started right up and ran in good shape.
Dave

Sent from my iPhone

> On Jan 9, 2018, at 3:35 PM, Chris Mason  wrote:
> 
> If the unit is still under warranty, have any Generac dealer run through
> the diagnostics. The testing flow suggests rotor or stator problems, and
> there is a proscribed testing flow that needs to be performed. If it is
> determined to be a warranty issue, it will be fixed for you at no cost.
> If it is not under warranty, I would still have a dealer look at it. There
> are a large number of possible issues and you are going to spend a lot of
> time trying to find the problem. A Generac tech will likely find the
> problem in a few minutes unless it is a serious problem, in which case you
> were never going to find it.
> I'm a Generac tech so I can speak from some experience that this is likely
> not a simple issue.
> 
>> On Mon, Jan 8, 2018 at 8:13 PM, David Palumbo  wrote:
>> 
>> I am troubleshooting a 6kw EcoGen LP gas generator in my neighborhood that
>> starts quickly
>> • but immediately shuts down with an “Under Voltage” shutdown alarm
>> • I can clear shutdown alarm and restart with same result. I tried this a
>> few times with same result. One of the start attempts included a back fire
>> before shutting down.
>> • Generator was recently run successfully for a few hours during a cold
>> snap. Started after several attempts at -10 F.
>> • According to the EcoGen manual this Under Voltage alarm is triggered “If
>> the generator voltage falls below 85% of nominal for more than 15
>> seconds”.  This definitely isn’t happening as the generator starts as usual
>> but shuts down within one or two seconds.
>> I will check for fouled spark plugs tomorrow. Anything else that might be
>> the problem?
>> 
>> David Palumbo
>> Independent Power LLC
>> Hyde Park, VT
>> 802-371-8678 voice or text
>> 
>> Sent from Mail for Windows 10
>> 
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> 
> 
> -- 
> Chris Mason
> NABCEP Certified Solar PV Installer™
> Solar Design Engineer
> Generac Generators Industrial technician
> 
> www.cometsolar.com 
> 264.235.5670
> 869.662.5670
> Skype: netconcepts
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