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  • Users: rjohnston
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  1. rjohnston

    Explanation of NEC article 680.26 section 3

    What is the significance of the 4" measurement with regards to isolated parts?
  2. rjohnston

    Consequences of electrically bonding SST to carbon steel

    Here is the scenario: 1. Two large carbon steel stuctures are submerged in pool water. 2. The structures are coated with an epoxy paint coating. 3. The structures are joined together by SST pins. 4. The pins are electrically isolated from the carbon steel structures by non-metallic bushings...
  3. rjohnston

    Cahodic Protection for Stainless Steels in pool water

    I have an application where I will be putting a large carbon steel structure in a pool water type environment. The chlorine level will be 2.0 to 2.5 ppm. No ozone or bromine. Water temperature to be 84F The carbon steel structure will be protected using a magnesium ribbon anode on the pool...

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