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John Dirks Jr
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Surge protector...got it. That's the first time I've seen one.

You participated in a recent discussion about how they shouldn't be double tapped to the main lugs. https://www.inspectorsjournal.com/forum ... IC_ID=9317
How common are they?

About 1 out of every 20-25 for me.

Of the many I have seen they are all double tapped to the mains. They are used mostly in my area to take a lightning hit.

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  • 1 year later...

Surge protector...got it. That's the first time I've seen one.

You participated in a recent discussion about how they shouldn't be double tapped to the main lugs. https://www.inspectorsjournal.com/forum ... IC_ID=9317
How common are they?

About 1 out of every 20-25 for me.

Let me dredge this up again.

Bill, the thread link you posted circles back to this one. Is there another thread? If they're not supposed to be tapped like this, what is the correct way? All of this type I've seen are tapped at the main lugs.

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Yup, "Surge Protective Device (SPD)", prior to 2009, when the UL listings were substantially revised, used to be called a "Transient Voltage Surge Suppressor (TVSS)"

The "Cliff Notes" version of information on the changes is here:

http://www.sea.siemens.com/us/internet- ... evised.pdf

Detailed information is here:

http://www.sea.siemens.com/us/internet- ... ection.pdf

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