what_barnacles
Guru
I dont normally give a hoot about an article but this one has me baffled.
https://www.passagemaker.com/technical/-through-hull-fittings-and-canaries-in-coal-mines
Read it (lots of good stuff) and consider the following statement,
I find that almost impossible to believe. There is no way they (boatbuilders and boatyards) bond thru hulls to prevent onboard electrocution. I have never read anything other than "tying all metals to the same electrical potential is to prevent galvanic corrosion".
Add to that, the statement flies in the face of galvanic isolators. They intentionally disrupt the "shorepower safety circuit" by adding diodes in the path to prevent current from flowing.
Any comments?
https://www.passagemaker.com/technical/-through-hull-fittings-and-canaries-in-coal-mines
Read it (lots of good stuff) and consider the following statement,
To minimize this risk, boatbuilders and boatyards provide an alternative path by connecting the green wire to all of your seacocks and through-hulls. If the shorepower safety circuit is compromised, the current has an alternative path to the water via the through-hulls. The good electrical connection through the green bonding wire provides a preferred path for the current, favoring the low-resistance electrical circuit to the meager choice your body offers (swimmers are still at risk). This safety circuit works so well you probably won’t even know that you have a killer aboard, unless your through-hulls tell you.
I find that almost impossible to believe. There is no way they (boatbuilders and boatyards) bond thru hulls to prevent onboard electrocution. I have never read anything other than "tying all metals to the same electrical potential is to prevent galvanic corrosion".
Add to that, the statement flies in the face of galvanic isolators. They intentionally disrupt the "shorepower safety circuit" by adding diodes in the path to prevent current from flowing.
Any comments?