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Completely agree with SM

Then, once you explained your concerns to the electrical inspector, then,
  1. you can have your ground impedance measured (you cannot do it yourself, since you need a specialized equipement to do it, a Ground Impedancemeter, that is not part of the average audiophile tool.
  2. the status of different metals along the ground path with be checked against electrolytic potentials. Again, better not to do it yourself if you don't get what I mean. Your grounding has to last tens of years.
  3. Tighting torque of grounding nuts will be checked against the rules.
  4. Grounding wire gauge will be checked againt the rules. Will be different according to the purpose of this wire: risk of direct lighning stroke or not. How to descry them is written in the Code. You know it?
  5. Grounding wire path will be checked: direct lighting stroke path (from roof etc, has to be the more direct possible, but indirect stroke diverting wires shall, or not, follow the same path as main power wires depending on the code (the rationale is to minimize magnetic perturbation by having as small a loop area as possible. But some other code writers said it makes the path longer...). Did you know?
  6. Other checks I'm clueless about, because I don't know the code that applies to your particulat place.

So, if you have reasons above paranoia to believe your grounding scheme has not been checked properly, have it done by a contractor (listen to the inspector's advices to get a good contractor in a town you don't know), before jumping into finding solutions like alltec's for problems maybe just inexistent.

On another, but related topic, since you are to live in an area with one of the highest keraunic levels in the world (true!), I would warmly recommend you a double stage lightning protection for your gear: a primary protector at the mains entrance box, and a secondary protector in your music room, at your "stereo" power distribution box.

My credentials in this matter: I developped, wrote the specs,then became head of project, then was behind every test done in a project of predictive maintenance computer for heavy helicopters, which have to fly whatever weather, including storms (these helicos are often used for offshore platform staff commuting: no way to explain the guys they'll have to wait before getting back homebecause of a storm, they are not astronauts!). The average used for protection calculation was one direct stroke per week. It was 10 years ago, it was then certified (would have lost my job if not certified!), and since has not yet once crashed.
God Jupiter was shown to be under my control (but I must admit I can't change to a swan when I want to pick up too young girls. I try, I try...)
In my technical library, the books on the topic (only those written in english here) :
  1. Lightning and Ligntning Protection, by William C. Hart and Edgar W. Malone, ISBN0932263-14-3 all your questions are answered in this book
  2. The Aerospace Engineer's Handbook of Lightning Protection, by Bruce C. Gabrielson, ISBN0932263-25-9useful for your son's next astronaut daydream
  3. EMP Environment and System Hardness Design, by Dr Rabrinda N. Ghoose, Lib of Congress 83-51067 (sorry, old book from '83!) Then your stereo would resist to a high altitude nuclear blast when all your neighbors 1,00 miles around would be broken! What a pride!


Come on, don't be shy, call this electrical inspector, then report to us, we'll all of us then stand up and, together, shall say "Bravo Miiiiiiiiiiiike, you're a biiiiiiiig boy, you daaaaaaared it!" à la weightwatcher fashion, with a common voice... Bravo Mike etc etc... Wouldn't you like to be praised this way, by all of us, believers, non-believers, naysayers, yeahsayers, sceptical one and gullible ones?

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