Weighing in ...

1)At a recent SMA Inverter Training, we were cautioned that the Deltas were not
UL listed. Like many of us, I was already well aware of that. What was
interesting, was the trainer specifically recommending we NOT use them, for
reasons related to liability. 

2)At a different training, by a well respected professional engineer who
frequently posts here, they were judged to likely be as effective in preventing
damage as a voodoo doll.

3) If one "ruptured" while someone happened to be standing in front of
it........

4) Why aren't they UL listed?

Dick 
Solarwind Electric

You wrote:
> North Texas Renewable Energy Inc wrote:
>> August
>> I made a service call to a residential PVinstallation several years ago 
>> that I did not install. The vintage Trace, size I don't recall, had quit 
>> working. The Delta surge suppressor had actually ruptured along it's 
>> radial seam, a result I had always heard indicates a surge being 
>> absorbed.
>

