60 amp contactor [RE-wrenches]

[Drake Chamberlin]

Hello Wrenches, 

Thanks for all the help with finding transfer switches. 

We understand that many installers use transfer switches on Sunny Boy - 
Sunny Island systems in order to bypass the AC coupling when the system 
is connected to the grid, and only AC couple when the the grid is down, 
so the solar can charge batteries. 

Can anyone comment on what problems have occurred when the relay is not 
used, so that the Sunny Boys sell to the grid through the internal 
transfer relays in the Sunny Islands?  

Thanks,

Drake 

Steve Lawrence wrote:
> 
> Iota Engineering makes a 50A and a 100A automatic transfer switch.
> That's what we use in our Sunny Island designs.
> 
> -----Original Message-----
> From: Drake Chamberlin [mailto:Drake.Chamberlin at redwoodalliance.org] 
> Sent: Thursday, September 20, 2007 1:52 PM
> To: RE-wrenches at topica.com
> Subject: 60 amp contactor [RE-wrenches]
> 
> 
> Does anyone know of a good source for a 60 amp, 240 volt contactor or 
> transfer switch?  I need one for a Sunny Island, grid backup system with
> 
> AC coupled Sunny Boys and a generator.  
> 
> Drake 
> 
> 
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