[RE-wrenches] Generator interface relay

Tue Jul 8 06:25:59 PDT 2025

A 240 V coil, block relay works for this. Connect the coil wires to the 
output L1 and L2 of the generator. Run the AC input between the common 
and the N/C terminal. When the generator starts, the relay opens and the 
power is off.

_Drake Chamberlin_

_Athens Electric LLC_

_Ohio Electrical Contractor's License 44810_

_NABCEP Certified PV Installation Professional_

---

On 2025-07-07 21:49, Jeremy Rodriguez via RE-wrenches wrote:

> The GT inverter does not have this function.  I just need a relay to 
> drop L1 or L2 to the inverter when the generator starts.
> 
> Jeremy Rodriguez
> Solar Installation / Design
> 
> All Solar, Inc.
> 1453 M St.
> Penrose Colorado 81240
> 
> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
> 
>> On Jul 7, 2025, at 3:25 PM, Darryl Thayer via RE-wrenches 
>> <re-wrenches at lists.re-wrenches.org> wrote:
> 
> I am confused does you GT have a drop grid function?
> 
> On Mon, Jul 7, 2025, 4:07 PM Ryan Harkins via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote:
> 
> PSP Products!  SAK-60 model for up to 60A.  Easy setup, detects 
> frequency of generator, and drops the inverter out for you.  Doesn't 
> require direct wiring to the gen.
> 
> <SAK-60-Angle-Shadow-scaled.jpeg>
> 
> SAK-60 Wireless Load Management [1]
> pspproducts.com [1]
> 
> Ryan Harkins
> NABCEP Certified PV Installation Professional(tm) /
> Project Manager
> 
> <Screen Shot 2013-04-12 at 2.33.51 PM.png>
> 
> Synergy Renewable Systems, LLC
> PO Box 58
> Stoughton, WI 53589
> PH: (608) 712-7862
> 
> See our new website!
> www.synergyrenewablesystems.com [2]
> 
> On Jul 7, 2025, at 3:33 PM, Jeremy Rodriguez via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote:
> 
> Wrenches
> What are you using to drop AC to a GT inverter when a generator starts 
> up?
> I have a 40A rated contactor in place but it failed after 18 months.
> The generator is not close to the inverters , so I ran a grid reference 
> circuit to the inverter location and installed the contactor there.
> 
> Jeremy Rodriguez
> Solar Installation / Design
> All Solar, Inc.
> 1453 M St.
> Penrose Colorado 81240
> 
> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
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<SAK-60-Angle-Shadow-scaled.jpeg>
<Screen Shot 2013-04-12 at 2.33.51 PM.png> 
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Links:
------
[1] 
https://www.pspproducts.com/load-management/sak-60-wireless-load-management/
[2] http://www.synergyrenewablesystems.com
[3] http://re-wrenches.org
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