Originally Posted by tigerfan_9
I am planning on wall mounting my Samsung 4695 and using a panamax outlet for point of use surge protection and was going to install a "whole house" surge protector. Anyone have a reccomendation as to what product to get?
I agree with AVDoogie - either the IT or Cutler-Hammer products are good. There is one of the C-H models that also incorporates options for phone and cable/sat line protection - it's worth the extra cost and effort.
Also, in reading about the various whole house surge protectors, it looks like some show to connect it to each leg in the main break box but some show to use a 2-pole breaker. This wouldn't protect both legs if connected like this, right? You would need it connected to each hot leg in the main panel to protect your whole house, correct?
If you use a standard-size 2-pole breaker (not a 'twin', which is two breakers tied to the same lug), you are connected to both phases. Home panels alternate phases vertically, i.e., the top two circuits (numbered 1 & 2, left & right) are phase A; the next two down (3&4) are phase B, etc.
AVDoogie is correct to a point about the breaker connection being the second choice vs. directly connected to the panel mains; most home panel breakers have a maximum interrupt rating of 10 or 15kA. If you exceed this level, the breaker can fail, even though the TVSS is rated to handle it. Unfortunately, it can be difficult to find a code-legal method of connecting to the panel without a breaker.
I disagree, however, about the breaker opening. The duration of a transient is normally so short that it can't possibly generate enough heat to cause the breaker to trip, even if you are close to the maximum fault current.
The most important thing in installing a whole-house TVSS is to keep the leads from the panel to the TVSS as short as possible. Think centimeters or inches, not feet or meters. I like to use a knockout that is directly opposite the breakers feeding the TVSS - no more than 6-8" of total lead length. [FWIW, this is because the frequency of a transient (surge) is high enough that the inductive effects become the limiting factor in the device's performance.]