Surge Arrester installation

I have seen and used surge arresters that install into two of the breaker spots. This one is connected under the main panel lugs and is not secured in the panel. It is wedged between the feed lines. What do you think?

Thank you,
Kurt Blatt

Just discussed:

https://forum.nachi.org/t/can-anyone-tell-me-what-this-is-and-tell-me-if-it-is-a-defect/

2 Likes

Thank you. That is the answer that I needed.

Was it hard to put the cover back on?

No. It was tucked in there nicely.

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Multi lugging is never allowed.

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Thank you for a proper definition. That simplifies things.