Calculated Industries 5060 User Manual
ELECTRICALC®PRO
NEC®COMPLIANT
UPDATEABLE ELECTRICAL CODE CALCULATOR
Model 5060
User’s Guide
IMPORTANT NOTE ON
USER RESPONSIBILITY
Due to the serious nature of electrical
installations, the user of this calculator
must be certain that he or she is using
it correctly, i.e., in accordance with both
the following instructions and National
Electrical Code
®
requirements.
This tool was designed to work with the
2005 NEC
®
and future Codes, not replace it. Users, especially those unfamiliar with the Code, should exercise
appropriate caution.
If questions arise as to the correctness
of an answer given by the calculator, or
if an answer appears to conflict with the
Code, the user should always defer to
the Code.
If used responsibly and correctly, this
tool will save the user hours of tedious
calculation and look-up time, reduce
material costs, and provide safe, accurate, Code-legal answers.
National Electrical Code and NEC are
registered trademarks of the National
Fire Protection Association, Inc.,
Quincy, MA 02269
User’s Guide — 1
Introducing the
ElectriCalc®Pro
Now NEC®-Updateable!
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 2005 and
future National Electrical Codes, allowing you to solve Code-related problems
quickly and accurately. The most common NEC tables are now at your fingertips!
An important new feature of the Elec-
triCalc Pro is that it is now programmed
to accept future NEC changes, allowing
you to conveniently install future Code
editions in a few simple steps.
2 — ElectriCalc Pro
The ElectriCalc Pro instantly solves for
the following:
♦ Volts, Amps, Volt-Amps, Watts,
kVA, kW, PF%, EFF%, and DC
Resistance
♦ Copper or Aluminum Wire Sizes
♦ Parallel and Derated Wire Sizes
♦ Voltage Drop Wire Sizes, % and
Actual Voltage Drops, Voltage
Drop Distances and Wire Resistances
♦ 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!
User’s Guide — 3
Table of Contents
Installing NEC Updates . . . . . . . . . . . . . .4
Key Definitions . . . . . . . . . . . . . . . . . . . .5
Preference Settings . . . . . . . . . . . . . . . .25
Default Settings . . . . . . . . . . . . . . . . . .26
Basic Math Operations . . . . . . . . . . . . . .27
Percent Calculations . . . . . . . . . . . . . . .27
Memory Functions . . . . . . . . . . . . . . . .28
New 2005 Functions . . . . . . . . . . . . . . .29
Kerchoff’s Law . . . . . . . . . . . . . . . . . . .31
Motor Horsepower . . . . . . . . . . . . . . . .35
Ampacity Wire Sizing . . . . . . . . . . . . . .37
Voltage Drop . . . . . . . . . . . . . . . . . . . .45
Ground Conductor Wire Size . . . . . . . . . .51
Equipment Grounding Conductor Wire Size . .52
Fuse and Circuit Breaker Size . . . . . . . . .53
Starter Size . . . . . . . . . . . . . . . . . . . . .53
Overload Protection Size . . . . . . . . . . . .54
Conduit Size . . . . . . . . . . . . . . . . . . . . .54
Error Codes . . . . . . . . . . . . . . . . . . . . .59
Battery Information . . . . . . . . . . . . . . . .60
2005 NEC References . . . . . . . . . . . . . .61
Updating Future Code Revisions . . . . . . .61
Settings . . . . . . . . . . . . . . . . . . . . . . . .62
Warranty Repair and Return . . . . . . . . . .63
Legal Notices . . . . . . . . . . . . . . . . . . . .66
4 — ElectriCalc Pro
Installing NEC Updates
Your ElectriCalc Pro is now updateable
for future National Electrical Code
®
editions that are updated every three
(3) years (next Code update is 2008).
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 1800-854-8075). 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
section 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 — 5
Key Definitions
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 percent key.
B Back Space Function
Used to delete entries one keystroke at
a time (unlike the On/C function, which
deletes the entire entry).
S — Second Function
Used with other keys to access secondary functions
s — Store
Used with function keys to store values.
Displays: STOR.
6 — 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 = 3.141593
S – — Change Sign (+/–)
Toggles the sign of the displayed value
(from positive to negative or from negative to positive).
S % — x
2
Squares the displayed value.
S B — Square Root ( )
Square root function.
s 0 — Cumulative Memory
Adds displayed value to Memory (e.g.,
10 s0,20s0, r 0 = 30). To
subtract from memory, you must add a
negative value to the cumulative
memory (e.g.,10 s0, 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
Displays and clears the value saved in
(M+).
User’s Guide — 7
Sr — Clear Memory
Clears the value saved in (M+) without
changing displayed value.
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
Use to set default settings or modes
(see “Preference Settings” page 26).
S 1 — Single-Phase (1Ø)
Sets calculator to single-phase mode.
Displays: 1Ø.
S 3 — Three-Phase (3Ø)
Sets calculator to three-phase mode.
Displays: 3Ø.
S 2— 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). Displays: Amb°.
8 — ElectriCalc Pro
NOTE: The temperature units can be
displayed in Celsius (°C) or Fahrenheit
(°F) by using the preference function
S ÷.
S 4 — Copper/Aluminum
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 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.
User’s Guide — 9
S 9 — 90°C Wire Insulation
Sets calculator to 90°C insulation type
for wire size calculations.
Displays: 90.
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
S U — DC Resistance
Calculates and displays DC resistance.
Displays: OHMS.
10 — ElectriCalc Pro
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 W —Power Factor
Enters or calculates power factor percentage (based on watts and VA). Defaults to 100%. Entered or calculated
power factors greater than 100% will
result in an error. Displays: PF%.
H — Horsepower (Theoretical)
Enters or calculates theoretical horsepower (based on amps, VA, watts,
efficiency%, PF%, and/or volts). 1.0
HPth correlates to 746 watts at 100%
efficiency. Displays: HPth.
S H — Efficiency
Enters or calculates the percent ratio
between real power (watts) and theoretical horsepower. Default: 100%.
Entered or calculated efficiencies
greater than 100% will result in an error.
Displays: EFF%.
S • (Kw-hr
Btu) — Kilowatt
Hours to BTU function. Calculate
BTU (British Thermal Unit) based on an
entered Kilowatt Hour value.
User’s Guide — 11
S = (Btu
Kw-hr ) — BTU to
Kilowatt Hours function. Calculate
Kilowatt Hours based on an entered
BTU (British Thermal Unit) value.
S s (Par Res ) — Parallel
Resistance function. Calculate total
resistance based on an entered series
of resistance values.
Motor Horsepower Functions
The ElectriCalc Pro can be used to
determine motor full-load current
(amps) based on entries for motor
horsepower (HP), phase and voltage.
You can also find an equivalent motor
horsepower if you have entered voltage
and full load current values. Only HP
and voltage entries as defined by NEC
Tables 430-148 and 430-150 can be
used to determine motor loads.
S 8 — Induction/
Synchronous Motor Toggle
Toggles between induction and synchronous motor types. Displays: SYNC
(synchronous) or IND (induction - default).
12 — ElectriCalc Pro
h — Motor Horsepower
Enters or calculates motor horsepower.
Displays: SYNC HP (synchronous) or
HP IND (induction - default).
Ampacity Tables
The ElectriCalc Pro uses NEC Table
310-16 (310-17 for Free Air) to find wire
sizes and ampacity ratings of wires.
The calculator uses the following data
to calculate wire size: 1) insulation
temperature rating (60°C, 75°C and
90°C); 2) wire material (copper or aluminum); and 3) ambient temperature.
Only standard AWG wire sizes are
used by the ElectriCalc Pro.
NOTE: 1/0, 2/0, 3/0 and 4/0 wires are
entered using the 0 key (i.e., 0, 00,
000 and 0000).
w — Wire Size/Ampacity
Enters or calculates wire size based on
ampacity and voltage drop, if a voltage
drop length has been entered.
♦ First Press
If a wire length has been entered, the
first press will show the larger of the
ampacity or voltage drop derived wire
size. The calculator will use the larger
value when calculations require a wire
size. If no voltage drop length has been
entered, the calculator will display the
calculated ampacity rated wire size.
User’s Guide — 13
♦ Second Press
If a wire length has been entered, the
second press displays the smaller of
the two wire sizes. If not solving for
voltage drop wire size, then displays
the maximum ampacity.
♦ Third Press
If a wire length has been entered, displays the minimum wire ampacity rating.
S w — 125% Ampacity
Used for motor wire sizing when the
wire must not exceed 80% of its rated
ampacity (125%A). This keystroke
calculates wire size based on 125% of
the entered or calculated amps value.
Displays: 125%.
P — Parallel Size
Used to find the size of parallel conductors using amperage and an entered
quantity of wires. Parallel wire size
calculations smaller than 1/0 are displayed as “none” (display shows
“nonE”) as the NEC does not allow
parallel wire runs smaller than 1/0.
♦ First Press
When preceded by a number, calculates the applicable wire size for that
quantity of wires in parallel.
Displays: PAR WIRE SIZE.
14 — ElectriCalc Pro
♦ Second Press
Displays the maximum adjusted ampacity of the calculated parallel wire
size. Displays: WIRE A.
NOTE: No adjustments are made for
deration.
S P— Derated Wire Size
Used to calculate derated wire sizes
and allowable ampacity based on the
entered quantity of wires, NEC Table
310-16 and NEC Table 310-15(b)(2)(a).
Derated wire sizes are not calculated
when there are less than four wires, or
when the unit is in Free Air mode.
♦ First Press
Calculates the derated wire size, if you
have entered the number of wires, for
example, 4 S P
Displays: D/R WIRE SIZE.
♦ Second Press
Displays the maximum adjusted ampacity of the derated wire size.
Displays: D/R WIRE A.
♦ Third Press
Displays the derated adjustment factor
per the NEC Table 310-15(b)(2)(a).
Displays: ADJ %.
User’s Guide — 15
Voltage Drop Solutions
The ElectriCalc Pro will calculate
maximum lengths, minimum wire sizes
or actual voltage drops given the other
two values. Voltage drop solutions are
based on the DC resistance values
found in NEC Chapter 9, Table 8.
NOTE: Voltage drop solutions may vary
slightly from actual AC circuit values as
the calculator does not incorporate
factors such as inductive reactance,
skin effect, raceway material, etc.
v — Percent Voltage Drop
Used to enter or calculate voltage drop.
The default voltage drop is 3%. If wire
size or wire length values are not available, “nonE” will display since the voltage drop cannot be found.
♦ First Press
Enters a maximum allowable voltage
drop percentage (Displays: V DROP
%) or calculates actual voltage drop
(Displays: V DROP).
♦ Second Press
Calculates actual percent voltage drop.
Displays: V DROP %.
16 — ElectriCalc Pro
l — Length
Enters or calculates the length of a run
for voltage drop computation.
Displays: FEET or MET.
NOTE: Units of length can be set to
Feet or Meters by use of the Preference function S ÷.
S l — Wire Resistance
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 considered valid entries.
♦ First Press
Calculates the copper grounding electrode conductor size if you have entered a valid wire size.
Displays: GRND CU WIRE SIZE.
User’s Guide — 17
♦ Second Press
Displays the aluminum grounding electrode conductor size.
Displays: GRND AL WIRE SIZE.
♦ Third Press
Displays the circular mil area used to
calculate the grounding electrode conductor size.
Displays: CMIL WIRE.
SG—Equipment Ground
(EqGrnd)
This function uses NEC Table 250-122
to calculate the minimum equipment
grounding conductor size, given an
entered amperage rating or setting for a
over-current device up line (i.e., 300
SG).
NOTE: This function deviates from the
NEC Table 250-122 in that 1250 MCM
AL is used instead of 1200 as specified
in NEC Table 250-122.
♦ First Press
Displays the copper grounding conductor size for the entered amp rating.
Displays: EQPG WIRE SIZE CU.
♦ Second Press
Displays the aluminum grounding conductor size.
Displays: EQPG WIRE SIZE AL.
18 — ElectriCalc Pro
Fuse/Breaker Keys
The ElectriCalc Pro has special keys
that automatically calculate the amp
ratings of the following over-current
protection devices: Dual Element Fuses
(Time Delay), Single Element Fuses
(Non-Time Delay), Instantaneous Trip
Breakers (Type 1), Inverse Time
Breakers (Type 2), and Overload
Protection Devices.
These fuse and circuit breaker sizes
are derived using the “Percent of FullLoad Current” multipliers listed in NEC
Table 430-152.
You can also calculate the full voltage
starter size for non-plugging and nonjogging duty motors based on phase,
voltage, motor HP and NEMA table
specifications.
If a parameter is missing or invalid, the
calculator will display “nonE.”
SL — Motor Type
Based on NEC Table 430-152, this key
selects the motor type used to define
the percent factors for breakers/fuses.
Once set, the motor type remains fixed
until you change it or perform a Clear All
(Sx).
User’s Guide — 19
♦ First Press
Displays the current motor type. Note
there is no motor type in single-phase
mode.
♦ Second Press
In three-phase mode only, subsequent
presses of L will select and
display the next motor type from this
list: SQ-C non-E (Squirrel Cage, nonDesign E), SQ-C E (Squirrel Cage,
Design E), SYNC no codE (Synchronous), WND no codE (Wound Rotor).
D — Dual Element Fuse
♦ First Press
Calculates the minimum amp rating for
a Dual Element Fuse.
Displays: AMPS dE.
♦ Second Press
Displays the full-load current percent
multiplier used to determine fuse size.
Displays: %FLC.
SD
— Single Element Fuse (SEFuse)
♦ First Press
Displays the minimum amp rating
based on phase, motor type, and amperage. Displays: AMPS SE.
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