Can I Double Protect My Outlets with Outlet Surge Protectors?

  • Thread starter Thread starter DonL
  • Start date Start date
  • Tags Tags
    Protection
Click For Summary

Discussion Overview

The discussion centers around the feasibility and implications of using outlet surge protectors in conjunction with a whole house surge protector. Participants explore the potential benefits and drawbacks of "double protecting" outlets, considering both technical aspects and personal experiences with surge protection.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • DonL inquires about the compatibility of outlet surge protectors with an existing whole house surge protector, expressing concern about potential interference.
  • Dave supports the idea of adding outlet surge protectors, suggesting they could provide additional protection against surges that might bypass the whole house protector.
  • One participant explains that piggybacking surge protectors can lead to reduced effectiveness, as the weakest protector may fail first, compromising overall surge protection.
  • Another participant questions the necessity of additional protection, asking about the frequency of surge problems prior to the installation of the whole house protector and whether the motivation is primarily peace of mind.
  • A different viewpoint suggests that having a whole house surge protector should adequately handle surges, and that a secondary outlet protector, being located further away, would not be in direct parallel with the main protector.
  • One participant mentions the importance of using different classes of surge protective devices (SPDs) for comprehensive protection, indicating that a whole house protector is typically a larger class than outlet protectors.

Areas of Agreement / Disagreement

Participants express a mix of support and skepticism regarding the use of additional outlet surge protectors alongside a whole house surge protector. There is no consensus on whether this practice is advisable or necessary, and various concerns about effectiveness and necessity are raised.

Contextual Notes

Some participants highlight the importance of understanding the classes of surge protectors and the need for protection on all incoming lines, such as antennas and internet connections, to ensure comprehensive protection.

DonL
Messages
14
Reaction score
0
Good afternoon,

I have installed a whole house surge protector. Can I also "double protect" a few outlets with outlet surge protectors as well? I've read where you shouldn't piggyback surge protectors and didn't know it the additional outlet protectors would interfere with the whole house protector.

Thank you as always,

DonL
 
Engineering news on Phys.org
DonL said:
I've read where you shouldn't piggyback surge protectors

not that I'm aware of

DonL said:
didn't know it the additional outlet protectors would interfere with the whole house protector.

I would be quite in favour of adding additional surge protectors on power outlets, particularly where sensitive gear is plugged in.
I can see it as a way to help eliminate anything that got past the main protector

Dave
 
The reason to not piggyback several of them inside one protector is the weakest one will blow first and you might not know it's gone. So your capacity to absorb the next surge is reduced. Same reason you don't parallel fuses.

I'd say what you propose, scattering them about the house, is a good idea. Particularly if they're a type you can test and replace any that have made their ultimate sacrifice for you.
 
DonL said:
Can I also "double protect" a few outlets with outlet surge protectors as well?
What surges are you expecting that you must protect against ?
How often did you have problems with surges before installing the protection ?
Are you just buying peace-of-mind ?
 
  • Like
Likes   Reactions: jim hardy
jim hardy said:
The reason to not piggyback several of them inside one protector is the weakest one will blow first and you might not know it's gone. So your capacity to absorb the next surge is reduced. Same reason you don't parallel fuses.

I can see where you are coming from, but with the BIG arrestor first inline at the house entry point
it will/ should take the main brunt of the overload. It's not really as if it and a small secondary one are directly in parallel ... directly piggybacked
As the secondary one is at some xx cable length away

just my thoughts :smile:
 
  • Like
Likes   Reactions: jim hardy
DonL said:
I have installed a whole house surge protector. Can I also "double protect" a few outlets with outlet surge protectors as well?
Sure. Usually it is about having a class I and/or class II SPD for the house, and a class III for the individual device/outlet.
I don't know that 'whole house surge protector' is what class, but I guess it'll be something bigger than outlet SPDs, so it is OK.

Ps.: did you know that you have to protect every line what comes inside the house ( I mean: any antenna, phone, internet and so) if you want a decent protection?
 
Last edited:
  • Like
Likes   Reactions: Asymptotic and Tom.G

Similar threads

Replies
25
Views
4K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
14
Views
7K
  • · Replies 13 ·
Replies
13
Views
6K
Replies
12
Views
3K
  • · Replies 29 ·
Replies
29
Views
20K
  • · Replies 10 ·
Replies
10
Views
4K
Replies
5
Views
6K
Replies
5
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K