Originally Posted by anonemus
Is that rare surge applicable as well in my locale (Philippines)? Is my surge protector (see pic) considered an earthed protector? Apologies for this noob questions
If referring to the power strip, well those scam do not have earthing. Read its numeric specs. It does not list protection from each type of surge.
Earthing means, for example, a 3 meter earth ground rod. An effective protector connects from each incoming wire, less than 3 meters, to that 3 meter rod. A protector that does not make that short connection does not claim and cannot provide effective protection.
This applied everywhere in the world. Why does you telco suffer over 100 surges with each thunderstorm - and no damage? They waste no money on that grossly overpriced power strip. Every incoming wire in every cable first connects short to earth ground via one protector. To make protection better, the protector is located up to 50 meters distant from electronics. That separation is also important for protection.
Protection is always about where energy dissipates. Either energy is harmlessly absorbed in earth before entering the building. Or that energy will hunt for earth destructively via household appliances. And that power strip protector can sometimes make damage easier.
How to identify ineffective (profit center) protectors. 1) It has no dedicated wire for the short connection to single point earth ground. 2) Manufacturer will not discuss earthing - may even try to confuse safety ground with earth ground. Your power strip is the worst - violates both points.
To have protection means a protector connects even directly lightning strikes harmlessly to earth - and a protector remains functional. Protectors that fail during a surge provide no protection. Literally disconnect as fast as possible while leaving the surge connected to that appliance.