Whole House Surge Protect Sub Panel

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accesspro

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I am finishing adding a new sub-panel for a customer.
The main panel has no more room in it and is flush mounted on the exterior of the house.
I want to add some surge protection. Would my installing a whole house surge protector at the sub-panel be much different than at the main?
The sub is mounted back to back to the main and is fed w/ #8s.

TIA

Bob
 

JWelectric

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If it is wired into a remote distribution panel then it wouldn’t be whole house would it?
 

Alectrician

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Uhhhh....that was the question.

If it's wired into the main panel thru a breaker it protects everything on the bus....right? Does iot protect anything downstream on a sub panel? If so, would it not do the same thing in reverse since th sub and main are connected?

I have no idea. I was hoping someone would know.
 

JWelectric

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Uhhhh....that was the question.

If it's wired into the main panel thru a breaker it protects everything on the bus....right? Does iot protect anything downstream on a sub panel? If so, would it not do the same thing in reverse since th sub and main are connected?

I have no idea. I was hoping someone would know.

Yes it will take the surge no matter where on the system it is installed
 

Jim Port

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IIRC the instructions call for the surge protection to be as close to the main breaker as possible. A subpanel certainly would not meet this.
 

Alectrician

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IIRC the instructions call for the surge protection to be as close to the main breaker as possible



A subpanel certainly might meet this.
 
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