Standard lead wire is 10 feet of 12# AWG solid copper wire with TW type insulation silver soldered to the core primed and tested with an insulating asphalt petting compound at the factory.

Standard Backfill

Most magnesium and zinc anodes used in soils requires the use of prepared backfill around the anode for the following reasons.

1. Increases the effective surface area which lowers the anode to earth contact resistance.
2. The bentonite clay absorbs and retains moisture.
3. The gypsum provides a uniform, low resistance environment.
4. The sodium sulphate (a depolarizing agent) minimizes pitting attack and oxide film formation.

Today the standard backfill for magnesium and zinc consists of...

• 75% Hydrated Gypsum (CaSO4 2H20)
• 20% Bentonite Clay
• 5% Sodium Sulphate

Backfill is vibrated during filling to ensure compact fit and optimum current output.

We package  the anode in a cotton bag with an outer paper bag.

 Pallets are wrapped with stretch wrap plastic.  We recommend that pallets be stored under shelter for protection from the elements prior to use.  Pallet covers which will keep anodes protected up to six months are available upon request.

Stuart Steel Protection recommends the anode lead wire be connected to structure by a thermo-connection, using proper recommended size weld metals.