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Old 5 Days Ago
sblantipodi sblantipodi is offline
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Originally Posted by jonnyGURU View Post
Wouldn't sending surge to ground energize parts you don't want energized?
sincerely I don't know.
APC is proud of doing that... this is from an APC rep on the APC forum.

The main difference between our Surge Protectors and our competitors, is that we do not rely on Joule ratings alone. APC Surge Devices shunt the excess voltage that come through with a surge, while competitors simply absorb the excess voltage.

The higher the Joule rating the better the surge absorbtion, but APC uses absorbing as a last line of defense. If the Surge Protector is not plugged into a grounded outlet, then the only line of defense will be absorbing the surge, and it will not perform to its full capabilities.
As far as I understand redirecting the excessive voltage to the ground is safer for both connected equipments and for the UPS itself.
but feel free to correct me if you understood it better
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