Re: Whole house surge suppressors

From: w_tom (w_tom1_at_usa.net)
Date: 07/07/04 

Date: 7 Jul 2004 05:56:02 -0700

Appliances already have effective internal protection. With a
properly installed 'whole house' protector and the so critical earth
ground, then any induced potential inside the building will remain
well below what appliances are designed to withstand. A 'whole house'
protector may not be perfect. But with it, residual transients inside
a building should remain at below what appliances must withstand;
below those ratings of appliance internal protection.

  Anything that can be effective adjacent to the appliance is already
inside that appliance. One of the early requirements for such
internal protection was the CBEMA. Even Intel specifications for
power supplies require sufficient internal protection. Internal
protection that assumes the 'whole house' protector exists and that
all incoming utilities are properly earthed to the single point earth
ground.

"Charles Perry" <pipesandtobacco@hotmail.com> wrote in message news:<2kvovfF5vehkU1@uni-berlin.de>...
> Do you have surge suppressors that provide surge reference equalization?
> What that means is a surge suppressor with power and cable protection in the
> same box. Even if the grounds for both electric and cable service are
> grounded at the same point, it is still possible to end up with an induced
> potential between them at your television. The suppressor with both power
> and cable protection will clamp this potential at a safe level.
>
> Charles Perry P.E.

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