Calculated Industries 5070-A Pocket Reference Guide User Manual

Page 27

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background image

P

ocket

R

efeRence

G

uide

— 27

(cont’d)

3. Set to Copper (if necessary):

 

(Cu/Al)

1 Ø 75 Cu

1 Ph

4. Enter Amps:

  

AMPS 11.

5. Enter Volts:

   

VOLT 208.

6. Enter Length:

   

FEET 175.

7. Enter Wire Size:

 

AWG 8 Cu

WIRE SIZE

8. Solve Voltage Drop:

DROP 3.0

V

9. Solve percent Voltage Drop:

DROP 1.4

%

V

Finding Voltage Drop Wire Size

A 20 Amp, 3Ø 208 Volt load will be

located 175 Feet away from the source.

Assuming a 3% allowable Voltage Drop,

what is the size of 75°C conductor

required for this branch circuit?

KEYSTROKE

DISPLAY

 

0.

1. Set to 3-Phase:

 

(3Ш)

3Ш Ph

2. Set to 75º C:

 

(75º C)

75

3 Ph

KEYSTROKE

DISPLAY

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