Nathan,
I don't think anyone makes a 100-amp PV GFP. The panel mount breaker
model that's being used for the PV GFP doesn't include a 100-amp breaker.
The Classic has a built-in GFP so you shouldn't need an external GFP for
it. You will need to add a GFP for the FM60 - a single 80-amp GFP would
work.
You can use the dual 80-amp GFP and shut down both PV arrays at the same
time if the GFP is wired to disconnect the PV array from the charge
controller input. That's where Outback's instructions used to show the
GFP, and it is a better place for it than on the charge controller
output anyway. Midnite's instructions show the GFP on the charge
controller input, but their 80-amp GFP is a single.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
On 4/17/2012 11:08 AM, Nathan Stumpff wrote:
Wrenches,
In a job coming up I have a customer with an existing FM60 controller,
520 watt (!!) array. We are doing a ton of work, including adding a 4
kW solar array with Classic 150 charge controller. I am trying to
figure out how to handle the GFP.
For the Classic, I need a 90 or 100 A output breaker minimum. 80 A is
not an option. The OutBack dual GFP is 80 A, and so it not an option.
Is there a 100 A GFP breaker assembly I have just never seen? Is there
a way to use the Classic's GFP to run an external relay via AUX (to
trip the FM60 output breaker at the same time)? Any ideas?
Thanks,
-Nathan
--
Nathan J. Stumpff - Arctic Sun, LLC
NABCEP Ceritified PV Installer #091209-175
nat...@arcticsun-llc.com <mailto:nat...@arcticsun-llc.com>
Office: 907/457-1297
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