PLC | mask cable connection? One side, both sides of the ground

[http://vkinngworld.blogspot.com/]


Are usually popular only take one side,
Can not both sides to ground.


Reason? WHY?
Check a lot of pages are finding out why.


I summarized this principle should be!!


Ground controllers, ground with other big power line can not be connected in series,
To be connected with the star-ground,
Is the fear of series equipment to the back-ground line,
Is not a zero potential.


So ☆ ground terminals each device will have different potential ☆


And because: each device ground terminals, have different potential


So: When the mask wire to ground connection on both sides, it will have a great current (magnetic field),
But affects the inside of the signal line.


V = the potential difference on both sides of the ground (assuming = 10V)
R = resistance of shielded cable (less than 10 ohms)

A = V / R = 10V/10 ohms = 1A