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ETL 1110-9-10(FR)
5 Jan 91
SECTION 4
IDENTIFICATION OF VARIABLES
A
=
Total surface area to be protected.
AR
=
Radius of anode circle (rod system).
AS
=
Area protected by a single anode.
ASB =
Area protected by stub anodes.
CC
=
Center-to-center spacing of anodes.
CE
=
Coating efficiency in decimal form (0 to 0.99)
d
=
Anode backfill diameter.
D
=
Tank diameter.
DA
=
Diameter of anode wire or rod.
DE
=
Equivalent diameter factor for anodes in a circle
(for submerged applications).
DR
=
Diameter of anode ring (wire anode system).
E
=
Rectifier efficiency expressed in decimal form.
F
=
Fringe factor (for submerged rod anodes).
FADJ =
Adjusting factor for parallel anodes.
H
=
Anode depth below water surface.
I
=
Total current requirement based on field test or
assumed current density per square foot of bare
steel.
I'
=
Required current density.
IA
=
Maximum current per anode for the anode's desired
life.
K
=
Shape function.
L
=
Effective anode length.
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