Installing a Fire Hydrant

[@jeromewelch7409]

The plastic bag around the outside is how we keep the pipe from becoming a ground sink. It isolates the pipe from earth hence no galvanic corrosion. Water pipes are NOT part of the electrical grounding electrode system, we bond to water pipes to protect against accidental connection it becomes a low impedance path to ground back to the panel to cycle the overcurrent device! Otherwise there's a huge potential accidental contact to the water pipe that's not bonded may in fact look like resistance load within rating, so bonding ensure safety not grounding. Super important any and all electrical systems contain a grounding electrode system comprised of the lowest impedance path to Ground. Which does not include the water pipe. Gas piping, HVAC ducting, all of these items shall be bonded to the buildings electrical grounding electrode system. For safety! As a side-note this practice of encapsulating will in fact reduce tuberculation formation as that's part of a redox reaction potential with respect to the water chemistry and potential for stray voltage and current anywhere in the system. Remember the definition of voltage is "potential difference" so voltage can be present anywhere this phenomenon occurs " potential difference" so its oh so much more than just plastic around the pipe and fittings! . Peace

[@chrisladelfa3613]

So what's the purpose of the plastic wrapped around all the fittings? Does it help protect against tuberculation and/or allow the fittings to last longer?

[@sunroccorptrainingvideos5017]

The city requires it to prevent rust.

[@garyhanson7332]

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