Wow took lot of time to read and understand,
And thanks for more brief i give salute..
im not having good knowledge in electricity,
Yes there are 3 wires of ground, one is dedicated for rig,
What should the next step?
If things will not protect should i leave things alone, if no then what surge protector or what ishould i use..
Please dont use expert language for noob like me. Its so difficult to understand joule volt etc for me xd
First define the problem. Where are hundreds of thousands of joules harmlessly absorbed? Single point earth ground. Every wire inside every incoming cable must make a low impedance (ie less than 10 foot) connection to that ground before entering.
Your TV cable has always been required to make that connection. Unfortunately some installers and electricians do not understand this. That hardwire from the cable direct to earth ground is best protection. No protector required. That ground wire must be as short as practicable, have no sharp bends, no splices, not inside metallic conduit, etc - to make impedance low.
AC electric cannot connect direct to earth. So a protector makes that same low impedance hardwire connection. An effective protector does not do protection. It only connects to what does protection. That protector is only doing what a TV cable's hardwire does better.
2) If a surge is not inside, then best protection (already inside every appliance - every appliance needs this protection) is not overwhelmed.
3) Let's discuss impedance. Assume a protector connected to a wall receptacle safety ground will somehow earth a tiny 100 amp surge via that safety ground wire. That wire might be 0.2 ohms resistance. And something like 120 ohms impedance. 100 amps times 120 ohms is something less than 12,000 volts. Why less that 12,000? Because that surge (due to 12,000 volts) must find better paths to earth. One classic path is destructively through any nearby appliance.
So let's say that protector is 700 volts. That means 12,000 volts on one wire and 11,300 volts on another. Scammer love to manipulate numbers without discussing what it really means.
An IEEE brochure demonstrates this. A protector, too far from earth ground and adjacent to a TV, earths a surge 8000 volts destructively through another TV in the next room. Protector connected a surge to earth, destructively, via a best path to earth - a nearby appliance.
Once inside a house, that surge will find potentially destructive paths to earth. Since that protector was too close (low impedance) to appliances and too far (high impedance) to earth ground, then an adjacent protector simply compromised better protection inside some nearby TV.
4) Protection is never about a protector. Protection is always about where hundreds of thousands of joules dissipate (harmlessly in earth) and the (low impedance) path that current uses.
Ineffective protectors with massive profit margins will not discuss this to protect profits. Most consumers will not learn this because reality takes paragraphs - cannot be posted in a tweet.
What makes the 'whole house' protector so effective? Its connection to earth is low impedance (ie wire length - not thickness - is relevant). Connection from protector to appliance is long - high impedance. That high impedance between protector and appliance increases protection.
5) We learned in school math about the independent and dependent variables. The concept also applies here. Independent variable (what defines protection) is current. A dependent variable is voltage. Voltage is only a symptom of what happens when the current flows. The science of surge protection is about how that current connects to earth - for the same reason Ben Franklin's lightning rod is so effective.
Lightning seeks earth ground. It finds a best electrical connection via a wooden church steeple Wood is an electrical conductor - just not a good one. So that lightning current creates a high voltage (a dependent variable) - destroys the steeple.
6) Franklin's lightning rod connected to earth on a wire. Lightning seeks earth ground. It finds a best electrical connection via that wire - an excellent electrical conductor. So that same lightning current creates a near zero voltage - no damage. That same current will conduct no matter what - an independent variable. Protection is always about (for example) how 20,000 amps connects to earth. Either it creates a high and destructive voltage. Or it creates a near zero (harmless) voltage.
Damage is due to a human mistake. Because protection is always about how a current connects to and the quality of earth - as Franklin demonstrated over 250 years ago.
Finally, effective protector are sold like rice. You don't need a model for rice or a 'whole house' protector. That protector must have the dedicated wire to earth ground - that defines protection during each surge. Since lightning can be 20,000 amps, then a minimal 'whole house' protector is 50,000 amps. That defines protector life expectancy over many decades and many direct lightning strikes. That (not a model number or brand name) defines your best solution.