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Plans AUG-31 99 1x:36 PROM:MAIN OFFICE 5035704420 TO:96295577 PAGE:01 Portland General Electric Coin eny MEMORANDUM 208Y/120 3 phase, 4 wire TO: Rolf-Viking Electric 400 Amp 775-3479 FROM: Brian Moore 570-4406 SUBJECT: 3-PHASE SECONDARY FAULT CURRENT CALCULATION 08/31/99 CUSTOMER NAME: Bennett Porter ADDRESS: 12555 SW 69th Ave. CONTACT: Rolf-Viking_Electric PHONE: 775-3479 PGE ENGR/SDC: Brian Moore PHONE: 570-4406 XFMR Impedance (%): 1.4 % TRANSFORMER SIZE: 150 KVA Secondary VOLTAGE(L to L): 208 v WYE Secondary Wire LENGTH: 65 Feet WIRE SIZE Number of SECONDARY RUNS: — 2 Run(s)of: X350 QX - WIRE Impedance R: 0.0600 Ohms/1000' WIRE Impedance X: 0.0330 Ohms/1000' — SQUARE 0 PANEL SIZES: FAULT CURRENT: 19,389 Amps 10,000 Amps 22,000 Amps MINIMUM PANEL RATING: 22,000 45,000 Amps 65,000 Amps 100,000 Amps 125,000 Amps Signed: /6rr�ntaar•� 200,000 Amps aria oore