On May 6, 9:52*pm, w_tom wrote:
On May 6, 3:08 pm, wrote:

W_ *denies MOVs are commonly used in typical electonics or modern
appliances too. * He had to, because he can't answer the obvious
question of how MOVs can be used effectively in these applications,
yet they can't work in plug-in protectors and the only way to get any
protection is to have a nearby direct earth ground. * Faced with the
problem of MOVs providing protection in electronics/appliance without
an earthground, he simply denies MOVs are used in electronics and
appliances. *...

* Using trader's reasoning, all appliances contain MOVs. *Therefore
plug-in protectors need not be purchased AND all appliances never
suffer surge damage. Conclusions directly from trader's post.

LOL. You're a real riot. YOU are the one that in previous and
similar long threads has stated that manufacturers of appliances and
electronic equipment put surge protection in them and that it works,
and used that as an argument as to why a plug-in surge protector is
useless.

I never stated that all appliances contain MOVs. I only stated that
they frequently or commonly do. You, on the other hand, denied that
MOVs are used in that kind of application. At which point, I
provided you references to a couple of articles in Appliance Magazine
that discuss how MOV are in fact commonly used in those applications:
A poster just told you his microwave has them. Another told you the
phone system sitting in front of him has them.

So, once again, stop lying about what I stated and answer the simple
question:

How is it that MOVs can work as surge protection inside the appliance,
but not in a plug-in surge protector? Where is that essential direct
earth ground? Does that microwave come with a built-in earth
ground? If not, then just like the plug-in surge protector, there is
no direct earth ground, so how can the MOV be helping protect the
microwave?

And it would help if you just answer that question, not start with a
long rant.






* Reality: all appliances contain protection using numerous techniques
such as galvanic isolation. *Protection that means all but a rare and
typically destructive surge is made irrelevant. *Internal appliance
protection is dependent on a properly earthed 'whole house'
protector. *The typically destructive surge must be earthed to not
overwhelm protection inside all appliances.