Sw upgrade chips [RE-wrenches]

[Don Loweburg, Offline]

Hi Carl,

First of all --you must ask for the upgrade- Inverters ship with the standard 
chip. So you should have no problem with the one year old unit and a new one. 
Go ahead and stack the system and then apply for net metering. Your local 
util may or may not demand the IEEE929 upgrade. If they don't then you are 
in.  If they do -Trace will supply you with upgrades for both inverters. Now 
the fun begins. The latest upgrades implement the 929 that has a broader 
voltage window that should avoid nuisence disconnects--I say should --since I 
have not had field experience using them. 

If you do install the latest IEEE929 chips and have problems-please let me 
know.

Best,  Don Loweburg

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