0131im.jpg)
ETL 1110-9-10(FR)
5 Jan 91
LAVG =
Average lead wire length of anodes with
individual lead wires run in parallel.
LB
=
Bare anode length (used in submerged applications).
LF
=
Expected anode life.
ln
=
Natural or Napierian logarithm.
LW
=
Header cable/wire length.
M
=
Anode depth below water surface in centimeters.
N
=
Number of anodes required to meet the desired life of
a cathodic protection system.
NS
=
Number of stub anodes required.
B
=
Greek letter pi, or 3.14159.
PF
=
Paralleling factor.
p
=
Greek letter rho, or Electrolyte resistivity in
ohm-centimeters.
R
=
Average coating resistance in ohm-square feet.
RA
=
Single anode-to-electrolyte resistance.
RADJ =
Adjusted resistance.
RC
=
Structure-to-electrolyte resistance.
RH
=
Single horizontal anode-to-electrolyte resistance.
RL
=
Single anode wire hoop-to-electrolyte resistance.
RMFT =
Resistance per 1000 linear feet of
cable/wire.
RN
=
Multiple anodes to electrolyte resistance.
RNEG =
Resistance of the rectifier-to-structure
negative (ground) cable.
Rs
=
Effective coating resistance.
RT
=
Total circuit resistance.
129
Previous Page
