Search results

  1. W

    A question for an EE - Surge protector joule ratings - how much is enough

    As explained repeatedly, protection from all types of surges must also protect from the classic example - lightning. Then even smaller surges that destroy power strip protectors (but do not overwhelm protection inside appliances) are also averted. A 'whole house' soluton protects from all types...
  2. W

    A question for an EE - Surge protector joule ratings - how much is enough

    Again you make an empty accuastion. If it said what you claim, then you quote it. NEC says how to connect surge proetctors ... so that human life is not threatened. NEC says nothing about low impedance connections, where hundreds of thousands of joules dissipate, what a current sourc is, or...
  3. W

    A question for an EE - Surge protector joule ratings - how much is enough

    If jneutron had industry experience, then he knew neither UL nor NEC say anything about how surge protection works. Those non-profit organizations only discuss human safety. Anyone with basic electrical experience would know that. UL created UL1449 because so many power strips were causing...
  4. W

    A question for an EE - Surge protector joule ratings - how much is enough

    SPDs do not do surge protection. Will its hundreds of joules magically absorb surges that are hundreds of thousands of joules? Why must this well proven reality be reposted repeatedly. Because many only believe the first thing told by advertising. Then reality with numbers is just too hard to...
  5. W

    A question for an EE - Surge protector joule ratings - how much is enough

    So why are 1st semester engineres taught about current sources and voltage sources? Did you ignore the Wikipedia citaon that demonstrates your mistake? Surge protection of appliances, like surge protection of buildings, means near zero voltages and extremely high amperes (ie 20,000 amps) Any...
  6. W

    A question for an EE - Surge protector joule ratings - how much is enough

    Lightning is a typical example of a surge. Install protection to make direct lightning strikes irrelevant. Then lesser surges (ie due to utility switching) are also made irrelevant. Lightning voltages can increase so much as easily blow through anything including power strip protectors...
  7. W

    A question for an EE - Surge protector joule ratings - how much is enough

    Subverting reality is your specialty. A few egotists hate me 56,303 times more than others. 56,303 people did not vote. A few petty squatter voted. Angry because technical realities contradict popular myths. Boiling your venom is easy. Just cite basic electrical concepts. Your clan did not even...
  8. W

    A question for an EE - Surge protector joule ratings - how much is enough

    Electricity does not work that way. The surge is a current source. That means current flowing through a first protector is, at the same time, also flowing through a second protector, and through any 'at risk' appliance. You have assumed protectors work by blocking or absorbing a surge...
  9. W

    High current amplifiers and Power conditioner

    He listed items that draw a short and excessive current as non-linear loads. Then said, What non-linear load also creates that large over-current? Incandescent bulbs. As demonstrated by above numbers.</SPAN> A linear load is a resistor. None of those items are linear like a resistor. Neither...
  10. W

    High current amplifiers and Power conditioner

    Anyone can see an incandescent bulb is non-linear. Measure its ohms. The resulting multiplication demonstrates non-linearity. Only one who knows this stuff says why with numbers. Another informed by hearsay and venom denies without even one sentence that says why. And no numbers. Again, a 100...
  11. W

    High current amplifiers and Power conditioner

    Power ten 100 watt bulbs on that circuit. Using addition, that is a load of 1000 watts on a 15 amp circuit (ie 1800 watts). What happens when those ten bulbs first power on? 8000 watts are demanded. Does that trip the 15 amp (1800 watt) breaker? Of course not. Like all loads, it is...
  12. W

    High current amplifiers and Power conditioner

    Be more concerned whether it even does something useful. Posted earlier by Jim was your answer: Even a $4 power strip should provide more than sufficient power. Add the ampere numbers for your reciever and sub-amp. Only you have those numbers (amperes or watts). That power strip will safely...
  13. W

    Mains & Power

    Reasons for incandescent bulb pre-mature failure would be completely different from pre-mature failure of CFL bulbs. Pre-mature incandescent failure implies a constant and excessively high line voltage. Vague is which type was described as high efficiency bulbs. No filter, et al would address...
  14. W

    Mains & Power

    No one solution exists for all anomalies. Safety ground does nothing to protect light bulbs. A problem (the anomaly) must be defined before asking for a solution. For example, do incandescent bulbs brighten or dimi when major appliances power cycle? That often indicated a loose wire or some...
  15. W

    A question for an EE - Surge protector joule ratings - how much is enough

    You have no idea what longitudinal and transverse mode currents are. That current approaching a branch SPD is moving in the same direction on any or all wires. Obviously you did not know that. Maybe 100 amps approaching an SPD either means a same 5000 volts on all SPD wires (therefore no...
  16. W

    A question for an EE - Surge protector joule ratings - how much is enough

    This is something you have never done. Give numbers. But then you forget to make any numeric conclusions from those numbers. An honest post would have calculated the numbers from Faraday’s law of induction. You don’t for one simple reason. You cannot, Knowledge of Faraday's law means you...
  17. W

    A question for an EE - Surge protector joule ratings - how much is enough

    It would be boring if he had any facts and numbers. "Kill the messenger" is always a lively event.
  18. W

    A question for an EE - Surge protector joule ratings - how much is enough

    The naive post insults. Demonstrate little if any electrical knowledge. And again, no numbers based in engineering concepts. Protection is always about where energy dissipates. Hundreds of thousands of joules (a significant engineering number) must be absorbed somewhere. Either...
  19. W

    A question for an EE - Surge protector joule ratings - how much is enough

    Some Asus computer boards report a surge. That is low voltage. A USB port can report a surge. That is excessive current - in milliamps. Some surges are created by power cycling appliances. That is noise. Restoration of power on the grid is also called a surge. That is a large current...
  • RBHsound.com
  • BlueJeansCable.com
  • SVS Sound Subwoofers
  • Experience the Martin Logan Montis
Top