Originally Posted by MikadoII
Are these figures considered acceptable please?
They are acceptable, very good in fact. AC, anything under 5 mA is OK. Anything under 0.5 mA is fantastic.
On the DC side, one mol is 9.648×104 Coulombs.
You state that you have 0.5 microamperes, or 0.5×10-6 Amperes, of DC leakage. An Ampere is one Coulomb per second. This gives you, with some basic arithmetic, 16 Coulombs of galvanic corrosion per year or 1.6e-4 mols. I'm a little fuzzy on the electrochemistry of galvanic corrosion but a zinc anode has an atomic number of 30 and a typical ionization state of +2, so each mol of electrons will ionize 15 grams of zinc. Total of 2 mg of zinc. Basically nothing.
My math is probably wrong...