[l2ridehd]

VT, thanks for the input. I don't know the metal in the first ladder, but the last three were all stainless steel and the current one was marine quality stainless steel designed for an ocean salt pool which is about 60 times the salt content. I have tried the voltage probe in the water, but as there is concrete all around the pool a true ground for the other end is a challenge. The best I could try was the 3rd/center hole of an outlet. And I did check the outlet with a tester to verify that it was wired correctly and had that ground. But still had to add a length of wire to reach it and who knows if all connections were great. But got no reading. There is no other metal in contact with the pool any where. I also tested the GFI and they are working correctly. Probably should find a way to double check the voltage again and test with various things running. Pool filter on and off, solar on and off, heater on and off, etc.

I bought a sacrificial anode made for a sail boat and put it in the strainer basket and will see if that helps.

But Stainless Steel will rust. I have a sailboat down in Puerto Rico and almost all metal on the boat is Stainless Steel and I have to clean and polish it twice a year and I still get rust spots. But this newest ladder is only 6 weeks old and has a ring of rust right at the water line on both ladder arms. Very strange problem. And so far T&D prefers to replace ladders vs finding the root cause.