
Pocket RefeRence Guide — 7
Mode Set-up Keys
Prefs — Use to
dene calculator modes.
1Ø — Sets calculator to
Single-Phase mode.
3Ø — Sets calculator to
Three-Phase mode.
Amb° — Enters ambient
temperature for nding
Wire Sizes.
Copper/Aluminum
(Cu/Al) — Toggles
between Copper and
Aluminum Wire.
Free Air (FrAir) — Sets
calculator to Free Air
mode.
60°C Wire Insulation —
Sets to 60°C Wire.
75°C Wire Insulation —
Sets to 75°C Wire.
90°C Wire Insulation —
Sets to 90°C Wire.
Electrical Keys
kilo- — Used to identify
“kilo-” values.
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