Calculated Industries 5065 Manuale utente
ELECTRICALC
®
PRO
NEC®COMPLIANT
UPDATEABLE ELECTRICAL CODE CALCULATOR
Model 5065
User’s Guide
The
ElectriCalc
®
Pro
is an invaluable
calculator for today’s busy electrical
professional. Unlike a regular calculator, it
has intuitively labeled “electrical keys” and
conforms to the 2008 (and 2005, 2002,
1999, 1996) and future
National Electrical
Codes
, allowing you to solve Code-relat-
ed problems quickly and accurately. The
most common NEC tables are now at
your fingertips!
An important feature of the
ElectriCalc Pro
is that it is programmed to accept future
NEC changes, allowing you to convenient-
ly install future Code editions in a few sim-
ple steps.
Introducing the
ElectriCalc®Pro
Now NEC
®
-Updateable!
The
ElectriCalc Pro
instantly solves for
the following:
• Kirchhoff’s Law
• Ohm’s Law
• Volts, Amps, Volt-Amps, Watts, kVA,
kW, PF%, EFF%, and Resistance
• Copper or Aluminum Wire Sizes
• Parallel and Derated Wire Sizes
• Voltage Drop Wire Sizes, % and
Actual Voltage Drops, Voltage
Drop Distances and Wire Resis-
tances
• Kilowatt hours and BTU’s
• Parallel Resistance
• Grounding Conductors Sizes
• Motor Full-Load Amps
• Overload Protection Sizes
• NEMA Starter Sizes
• Conduit Sizes
• And much more!
Table of Contents
Key Definitions . . . . . . . . . . . . . . . . . . . .1
Preference Settings . . . . . . . . . . . . . . . .21
Default Settings . . . . . . . . . . . . . . . . . .22
Basic Math Operations . . . . . . . . . . . . . .23
Percent Calculations . . . . . . . . . . . . . . .23
Memory Operations . . . . . . . . . . . . . . . .24
Kirchhoff’s Law . . . . . . . . . . . . . . . . . . .26
Ohm’s Law . . . . . . . . . . . . . . . . . . . . . .29
Motor Horsepower . . . . . . . . . . . . . . . .31
Ampacity Wire Sizing . . . . . . . . . . . . . .34
Voltage Drop . . . . . . . . . . . . . . . . . . . .41
Ground Conductor Wire Size . . . . . . . . . .47
Equipment Grounding Conductor Wire Size . .48
Fuse and Circuit Breaker Size . . . . . . . . .49
Starter Size . . . . . . . . . . . . . . . . . . . . .49
Overload Protection Size . . . . . . . . . . . .50
Conduit Size . . . . . . . . . . . . . . . . . . . . .51
Converting KW-HR and BTU . . . . . . . . . .56
Parallel Resistance . . . . . . . . . . . . . . . .57
Error Codes . . . . . . . . . . . . . . . . . . . . .58
Battery Information . . . . . . . . . . . . . . . .58
2008 NEC References . . . . . . . . . . . . . .59
Updating Future Code Revisions . . . . . . .60
Settings . . . . . . . . . . . . . . . . . . . . . . . .60
Repair and Return . . . . . . . . . . . . . . . . .61
Warranty . . . . . . . . . . . . . . . . . . . . . . .62
FCC Class B . . . . . . . . . . . . . . . . . . . . .65
Legal Notices . . . . . . . . . . . . . . . . . . . .65
Your
ElectriCalc Pro
is now updateable
for future National Electrical Code®
editions that are updated every three
(3) years. To upgrade your unit, follow
the instructions below:
1) Purchase the NEC Update from CI
(see pricing / details from CI’s Web
site: www.calculated.com or call
1-800-854-8075). This Update is in the
form of a chip that contains the new
Code.
2) Once you receive the NEC Update
chip, you need to install it in your
ElectriCalc Pro:
a) Turn calculator off.
b) As a precaution, remove the bat-
tery (located back of calculator, top
of unit) by sliding battery door out
with your thumbnail. Set aside.
c) Using a screwdriver, pop out the
square tab located in the middle sec-
tion on the back of your calculator.
d) Replace it with the new update tab
by inserting it into the slot.
e) Replace the battery door.
f) Turn calculator on. Your calculator
is now updated and ready to use.
User’s Guide — 1
Standard Calculator Functions
o—
On/Clear
Turns on power. Pressing once clears
the last entry and the display. Pressing
twice clears all non-permanent values.
O —
Off
Turns all power off. Clears the Memory
and most internal registers.
+ - x ÷ =
Arithmetic operation keys.
0 1 2 3 4 5 6 7 8 9 •
Used for keying in numbers.
%—
Percent
Four function (+,-,x,÷) Percent key.
S v —
Reciprocal (1/x)
Finds the reciprocal of a number (e.g.,
8 S v 0.125).
B—
Back Space Function
Used to delete entries one keystroke at
a time (unlike the ofunction, which
deletes the entire entry).
S —
Second Function
Used with other keys to access second-
ary functions.
s—
Store
Used with function keys to store values.
Displays: STOR
Key Definitions
2 — ElectriCalc Pro
r —
Recall
Recalls a value stored in a register (e.g.,
to recall voltage drop % press r v).
Displays: RCL
S + —
Pi (
π
)
Constant = 3.1415927
S - —
Change Sign (+/–)
Toggles the sign of the displayed value
from positive to negative or from nega-
tive to positive.
S % —
x
2
Squares the displayed value.
S B —
Square Root ( )
Square Root function.
s 0 —
Cumulative Memory (M+)
Adds displayed value to Memory (e.g.,
1 0 s 0,2 0 s 0, r 0 =
30). To subtract from Memory, you must
add a negative value to the cumulative
Memory (e.g.,1 0 s 0, 5 S -,
s0, r0 = 5). Clears when the
calculator is shut off.
r 0 —
Memory Recall
Displays the value saved in (
M+
).
r r —
Display/Clear Memory (M-R/C)
Displays and clears the value saved in
(
M+
).
Sr—
Clear Memory
Clears the value saved in (
M+
) without
changing displayed value.
User’s Guide — 3
s1-9 —
Memory Storage
When pressed after the skey, the 1
through 9keys will store the displayed
values into non-cumulative Memory.
r1-9
Recall M1 – M9.
Mode Set-up Functions
S x —
Clear All
Clears all values, including Memory.
Resets settings to default values, except
preference settings which are retained.
S ÷ —
Preferences (Prefs)
Use to set default settings or modes
(see “Preference Settings”).
S 1 —
Single-Phase (1Ø)
Sets calculator to single-phase mode.
Displays: 1Ø
S 3 —
Three-Phase (3Ø)
Sets calculator to three-phase mode.
This is the default setting. Displays: 3Ø
S 2 —
Ambient Temperature (AMB°)
Permanently enters ambient tempera-
ture 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). Displays: AMB°
(Cont’d)
4 — ElectriCalc Pro
(Cont’d)
NOTE: The temperature units can be
displayed in Celsius (°C) or Fahrenheit
(°F) by changing the preference setting
(see “Preference Settings”).
S 4 —
Copper/Aluminum (Cu/Al)
Used to toggle between copper (de-
fault) and aluminum wire types. When
the wire type is revised, any calculated
wire size will be re-calculated automati-
cally. If a wire size is entered with the
wrong wire type, pressing S 4 will
change the material type without
changing the size. Displays: Al or Cu
S 5 —
Free Air (FrAir)
Sets calculator into Free Air mode,
which refers to NEC Table 310-17 for
wire size calculations. Displays: FrAir
S 6 —
60°C Wire Insulation
Sets calculator to 60°C wire insulation
type for wire size calculations. This is
the default setting. Displays: 60
S 7 —
75°C Wire Insulation
Sets calculator to 75°C insulation type
for wire size calculations. Displays: 75
S 9 —
90°C Wire Insulation
Sets calculator to 90°C insulation type
for wire size calculations. Displays: 90
User’s Guide — 5
Electrical Functions
K—
kilo-
This key is used with Watts, Amps,
Volts, and Volt-amps keys to identify
“kilo-” values.
S K —
milli-
This key sequence is used with Watts,
Amps, Volts, and Volt-amps keys to
identify “milli-” values.
A—
Amps
Enters or calculates Amps (using Volts
and VA or Watts). Displays: AMPS,
KAMP or mAMP
U
— Volts
Enters or calculates Volts (using Amps,
HPth, and VA or Watts). Default value is
240 Volts. Displays: VOLT, KV, or mV
V—
Volt-Amps
Enters or calculates Volt-amps (using
Amps, Volts and Horsepower or Watts).
Displays: VA, KVA, or mVA
W—
Watts
Enters or calculates Watts (using Amps,
Volts, and VA or Horsepower).
Displays: WATT, KW, or mW
S A —
DC Amps (Idc)
Enters or calculates DC Amps (using DC
Volts and Resistance). Displays: Idc
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