Nicholas440 said:
I use an APC 1500, and been using APC's on my computers for 15 years without a problem and I get a lot of surges and spikes here. ... good article about them and how they work and how to choose them here :
http://electronics.howstuffworks.com/surge-protector1.htm
HowStuffWorks is a benchmark that identifies the electrically naive. That HowStuffWorks articles is so full of myth and lies that very long posts would only discuss the mistakes in its first page.
Surges occur typically once every seven years. If someone is getting frequent surges and spikes, then he is replacing dimmer switches, clock radios, and bathroom GFCIs constantly. Most see the slightest anomaly. Then call is a surge. That is mindset promoted by retail advertising so that many will buy ineffective and obscenely profitable power strip protectors.
How does a surge protector connect a surge to ground when it is so far away from earth ground? No problem. To promote the scam, they simply confuse earth ground with safety ground. To divert massive energy to earth, the protector must be within feet of single point earth ground. All four words have engineering significance. Why does a plug-in protectors not discuss single point earth ground? It does not claim to protect from that type of surge. Better is to keep people confuse with myths such as in HowStuffWorks.
To be earthed, a protector must have a dedicated wire for a short connection to that electrode. The wire must be separated from other non-grounding wires (not part of a power cable or wires inside the wall). But have no sharp bends (another reasons why a wall receptacle is not earth ground). No splices. No inside metallic conduit. Just a few of the many reasons why plug-in protectors will not discuss earth ground. AND do not claim protection in the manufacturer specifications.
All appliances contain serious protection. Anything a protector would do adjacent to the appliance is already inside the appliance. A surge too small to overwhelm internal protection can sometimes destroy the grossly undersized protector. Then the naive consumer will *assume*, "My protector sacrificed itself to save my computer."
Nonsense. Any protector that fails during a surge did no surge protection. Just another in a very long list of reasons why informed homeowners earth one 'whole house' protector. Upgrade that earthing. And waste no money on plug-in protectors.
Destructive surges occur maybe once every seven years. A protector is only as effective as its earth ground. Effective protectors have that ‘always required’ short connection to single point earth ground (that is different from safety ground). HowStuffWorks does not discuss any of this. Protection is always about where energy dissipates. A protector is only as effective as its ‘earth’ ground.