(6) Find the resistance of a three-anode group using an equation based on equation 2-11:

D.P

1

Rv %

Rn '

,

N

S

where Rn = the total anode-to-electrolyte resistance, N = number of anodes, Rv = resistance-to-electrolyte

of a single anode, P = electrolyte resistivity, P = paralleling factor from table 2-7, and S = spacing between

anodes (feet). Thus,

1

8600 0.00289

Rn '

98.2 %

3

4

Rn = 38.94 ohms

(7) Find the rectifier rating:

E = IR,

where I = 0.84 ampere and R = 38.94 ohms. Thus,

E = 0.84 x 38.94

E = 32.7 V.

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