On 5/31/2015 8:11 AM, Phil Allison wrote:
bud-- wrote:

As can be seen from the IEEE surge guide, 3 MOVs is absolutely standard
practice in the US.


** Really - you must send me a copy.

Yawnnnnn....

Link to the IEEE surge guide was in my first post. Excellent information
from a completely reliable source. If you read it you might learn something.


H-N only protectors can increase risk, not reduce it.

** Insane crap.

The problem I described, with 3 MOV protectors, is well know and in a
published research paper by the author of the NIST surge guide (guide is
also linked in my 1st post). Problems with using only a H-N MOV are
considerably greater. The fix in the paper was to run not just power
wires, but also signal wires through the protector with the voltage
limited from all wires to the ground at the protector (as also described
starting page 30 in the IEEE surge guide, which is linked-to in my 1st
post).


In the US the likely maximum surge energy at a MOV in a plug-in
protector is a tiny 35J, and that includes for the largest probable
power line surge (as in my 1st post). The simplest UL listed protector
here will have a joule rating far above that.

** Another one of you wild suspicions ?

Published research by the author of the NIST surge guide , who was the
US-NIST surge expert.

My information comes from the IEEE, the NIST, and published research.


Sometimes you post really interesting information.

Sometimes not.

This is one of the latter.