[RE-wrenches] Kohler 20kW (Generator automatic disconnect)

[Larry Crutcher, Starlight Solar Power Systems]

Ray,

I heard back from Kohler and they told me that the 20kW has no warranty if used off grid. They have 3 models for off grid use, 14RESA/L, 8.5RES and the 6VSG, which have an 18 month warranty. Do you know anything otherwise?

Larry

On Oct 1, 2013, at 8:16 AM, Ray Walters <ray at solarray.com> wrote:

Sounds like they need a 20 Kw Kohler. Hot Tub in the future?  They'll love their Kohler.  The Generac is just way too small to even consider IMHO.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 10/1/2013 8:11 AM, Larry Crutcher, Starlight Solar Power Systems wrote:
> William, Chris, Ray, Allan, et al.
> 
> Gen support would be ideal but this inverter setup will be a quad pack of Magnum 4024PAE (120/240 split; 16kW). Their New MSH inverter is single phase only and can not be stacked.
> 
> While disabling load(s) is the antithesis of the desired outcome, I'll review this possibility further.
> 
> Using a separate charger could work but it would need to be about 200A @ 32V which would add quite a bit of cost and be hard to sell since the Magnum inverters already have 4 high quality charges included.
> 
> A larger generator might be necessary if the customer won't agree to load shedding. Their plans are to expand the loads over time, operate a business, install a hot tube and more. Of course I have pushed the concept that conservation is paramount. The PV array and inverters are being oversized now for the future growth.
> 
> My ideal solution...Since Magnum inverters monitor the AC input and control it based on quality of power, it seems to me that there could be a setting for disconnecting the AC input if loads exceed a setpoint. Change in control software would be great.
> 
> 
> Thank you,
> Larry
> 
> 
>