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12 — ElectriCalc Pro
S l
— Wire Resistance (Wire Res)
Displays the actual resistance per
1,000 feet of the wire size in
w
based on NEC Chapter 9, Table 8.
Displays: OHMS WIRE
Ground Function Keys
G
— Ground
An output-only key used to find the
grounding electrode conductor size for
AC systems based on NEC Table
250-66 and an entered or calculated
service-entrance conductor (largest
size). Only actual wire sizes are con-
sidered valid entries.
♦
First Press
Calculates the copper grounding elec-
trode conductor size if you have en-
tered a valid wire size.
Displays: GRND CU WIRE SIZE
♦
Second Press
Displays the aluminum grounding elec-
trode conductor size.
Displays: GRND AL WIRE SIZE
♦
Third Press
Displays the Circular Mil area used to
calculate the grounding electrode con-
ductor size.
Displays: CMIL WIRE