Calculated Industries 5025 - Manual (Page 39)

User's Guide — 37
Ground Conductor Wire Size
You can use single or multiple service
entrance conductor(s) to find the
grounding electrode conductor for AC
systems. When using multiple conduc-
tors, the
ElectriCalc LT uses the
equivalent circular mils to find the
grounding electrode conductor (based
on NEC Table 250-66).
Find the grounding electrode conductor
wire size required when 2/0 is the larg-
est 3-phase 75°C copper service-
entrance conductor being used. What is
the equivalent aluminum size? What is
the equivalent circular mils?
Steps Keystrokes Display
Reset calculator [Set] [x] 0.
Set cond. temp. [Set] 7 3Ø 75 Cu 0.
Enter wire size 00 [WireSz] 00 CU
AWG WIRE SIZE
Find grnd wire sz [Grnd] 4 CU
GRND WIRE SIZE
Find alum size [Grnd] 2 AL
GRND WIRE SIZE
Find circular mils [Grnd] 133,100.
CMIL WIRE