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Recent content by westom

  • SNBForums Code of Conduct

    SNBForums is a community for everyone, no matter what their level of experience.

    Please be tolerant and patient of others, especially newcomers. We are all here to share and learn!

    The rules are simple: Be patient, be nice, be helpful or be gone!

  1. W

    Lightning Protection?

    Exactly. Damage is directly traceable to human failure. For example, outbuildings must have their own single point earth ground. Any conductor between two buildings must always make a connection to each building's earth ground before entering that building. Otherwise a direct strike to one...
  2. W

    Lightning Protection?

    First, if that worked, then all appliances already have best protection many times over. Second, that myth violates even what Franklin demonstrated in 1752. A surge is a current source. That means voltage increases as necessary to blow through anything that foolishly tries to stop it. How...
  3. W

    Lightning Protection?

    Demonstrates why surge damage is often directly traceable to a human who knows without first learning even how electricity works. Lightning is an electrical current. Or more specifically, a current source. That means voltage will increase as necessary so that current will flow. Static...
  4. W

    Lightning Protection?

    First, you have assumed lightning can be stopped. Direct lightning strikes without damage are routine. But only if you do what Ben Franklin demonstrated in 1752. Lightning rods do not protect structures by 'stopping'. Nothing does that. A lightning rod is only as effective as its earth...
  5. W

    Battery Backup or Surge Protector?

    That ISP deserves recommendation for providing reliable service during a blackout. Some are not so responsible.
  6. W

    Battery Backup or Surge Protector?

    Siemens makes a similar model. Other companies of integrity include General Electric, Leviton, ABB, Syscom, Intermatic, Polyphaser (an industry benchmark) and Ditek. A Cutler-Hammer sells in both Lowes and Home Depot since even informed homeowners can install one. One is often available...
  7. W

    Battery Backup or Surge Protector?

    ... to save data that was not yet saved. It does nothing for saved data. It does nothing to protect hardware. UPS also eliminates waiting for a computer to reboot (maybe once every two years?) after a blackout. A properly earthed 'whole house' protector is essential for protecting hardware...
  8. W

    Battery Backup or Surge Protector?

    If one drive is updated and another is in process when Power Good interrupts operation (incandescent bulb dims to less than 40% intensity), then the next paragraph applies. If a file on one drive is not completely written, then that filesystem falls back onto a previously saved copy. What...
  9. W

    Battery Backup or Surge Protector?

    Do you read your own citations? Brownouts cause no internal voltage variations. How do AC mains brownouts do damage when internal parts never see voltage variations? Please read your own citation. Brownouts do not cause hardware damage. Voltage can drop so low that incandescent bulbs dim...
  10. W

    Battery Backup or Surge Protector?

    Please provide a scientific paper that says that. When you power a major appliance, lights in all nearby homes dim as power plants take time to increase power to the neighborhood? That is what you now claim. Don't forget to provide these numbers since everything cited previously was classic...
  11. W

    Battery Backup or Surge Protector?

    You have completely confused what a fuse does with hardware damage. A fuse does not protect hardware. A fuse blows after that damage to avert fire - to protect human life. Maybe you are discussing an inrush current limiter? Unfortunately you do not know many functions and components that...
  12. W

    Battery Backup or Surge Protector?

    Tiny generator needs time to increase current. Delay due to mechanical parts; not due to electrical parts. Completely irrelevant to electricity from a multi-gigawatt generator that sees a near zero load increase. Power cycling a major appliance means no voltage reduction exists. Dimming is a...
  13. W

    Battery Backup or Surge Protector?

    I am not sure what you are discussing. Since oxidation happens between dissimilar metals (ie aluminum and copper). Sometimes a voltage with minimal current reduces this. But that does not exist inside electronics. Again, if that was a problem, then numbers from a datasheet for that part...
  14. W

    Battery Backup or Surge Protector?

    Wow. These subjective claims are "Far out". Yes an undersized conductor can oxidize. (Oxidizing does not provide more amps.) So we properly size conductors so that even the largest current demand is well below what is required. Anyone making electrical recommendations should know this...
  15. W

    Battery Backup or Surge Protector?

    Good. Please identify the part destroyed by low voltage. Help me out. Post the datasheet that shows damage from a low voltage. You won't. You cannot. Technical ignorance explains a cheapshot that only wastes bandwidth.
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