[RE-wrenches] Unusual problem with SMA TL inverter on metal roof

[RE Ellison]

Is the metal roof grounded? Just a fast thought.

 

bob

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Marco
Mangelsdorf
Sent: Thursday, March 13, 2014 10:31 PM
To: 'RE-wrenches'
Subject: [RE-wrenches] Unusual problem with SMA TL inverter on metal roof

 

Friends,

 

We have run across an odd technical problem at our commercial install at a
laundromat on our island.   Attached is the description of the issue from
SMA.  We don't know much except that we are switch out the TL inverters to
the old style US inverters because SMA has no fix for the phantom ground
tripping.  The issue is beyond our feeble understanding.  

 

Any observations to share?

 

Thanks,

 

marco

 

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