Calculated Industries 5070-B User Guide - Manual (Page 7)

6 — e
lectri
c
alc
® P
ro
(cont’d)
 
ambient temperature (amb°) — Permanently
enters ambient temperature for determining
ampacity-derived Wire Sizes. Ambient temperature
will only change when entering a new value or by
resetting the calculator. Defaults to 30°C (86°F).
amb will display when the Ambient Temperature is
other than 30°C (86°F).
Note: The temperature units can be displayed in
Celsius (°C) or Fahrenheit (°F) by changing the
Preference Setting (see Preference settings section).
 
copper/aluminum (cu/al) — Used to toggle
between Copper (default) and Aluminum
Wire Types. When the Wire Type is revised,
any calculated Wire Size will be re-calculated
automatically. If a Wire Size is entered with the
wrong Wire Type, pressing   will change
the material type without changing the size.
 
Free air (Frair) — Sets calculator to Free Air
mode, which refers to NEC Table 310.15(B)(17)
for Wire Size calculations.
 
60°c Wire insulation — Sets calculator to 60°C
Wire Insulation Type for Wire Size calculations.
This is the default setting.
 
75°c Wire insulation — Sets calculator to 75°C
Wire Insulation Type for Wire Size calculations.
 
90°c Wire insulation — Sets calculator to 90°C
Wire Insulation Type for Wire Size calculations.
electrical Keys

kilo- — Used with Watts, Amps, Volts, and
Volt-Amps keys to identify “kilo-” values.