rnd2
It is a pool (ie. chlorinated water). People will be swimming in it. There will be no fish.
As far as what the structures are lets just called it a large mechanical device with a lot of moving parts.
The SST pins are at the pivots.
The whole article reads:
"All metal fittings within or attached to the pool structure shall be bonded. Isolated parts that are not over 100 mm ( 4in.) in any dimension and do not penetrate into the poll structure more than 25 mm (1 in.) hall not require bonding."
Does that mean that...
Boomerang,
The cable is a braided flexible grounding/bonding cable (I think it is tin plated copper)
What I am fighting with is NEC article 680.26 There is a section that states parts in a pool greater than 4" in any direction must be grounded.
What is your interpretation of this?
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...
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...
