How many HEPD80 protection devices are needed for (2) 200A load centers in my home?

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Issue:
Are 2 HEPD80 surge protection devices needed for (qty 2) 200A load centers in a residency?

Product Line:
Home Surge Protective Device, Surgelogic

Environment:
Application

Cause:
Clarification

Resolution:
If the Load centers have individual feeds then you will need two HEPD80 SPD units. If the Load centers are mounted side by side, with one incoming feed, and the 1st Load center has a breaker feeding the other Load center , one SPD in the first load Center is only needed and will provide protection for both of the Load centers .