On Tuesday, May 23, 2017 at 12:23:20 PM UTC-4, westom wrote:
On Monday, May 22, 2017 at 7:36:50 PM UTC-4, wrote:
I can't believe that in the 21st century, manufacturers won't put a
couple of 10 cent MOVs in their machines. Throw in a ferrite bead or
two and you have a surge protector.

Apple did that even in the Apple II. It was as ineffective as power strip protectors.

A protector is only as effective as its earth ground. Explains why a 'whole house' protector (properly earthed) is so effective. And why MOVs without that low impedance (ie less than 10 foot) connection to earth can even compromise better protection already inside appliances.

Total nonsense, a plug-in will supplement the tiny MOV inside the appliance
and work with it. That's what the IEEE documents that have been provided
here many time say and show. The plug-in only increases the protection,
because it has much larger MOVs. And which MOV would a person rather
have an incoming surge see first? The big one in the inexpensive plug-in
surge protector that is easily replaced or the smaller one inside the
$1000 TV?



Informed consumers always earth a 'whole house' solution. To enhance that protection, then earth ground is upgraded. Since a protector (or MOV) is only as effective as its earth ground.

Still unanswered after all these years, if a direct, nearby, earth ground
is essential, then how do those MOVs inside appliances work? At times
you've held positions ranging from they work and that's why appliance
manufacturers put them in, to at other times denying that they use MOVs
at all.