Calculated Industries ElectriCalc Pro 5060 User manual

USER’S
GUIDE
E LECTRI C AL C
®
P RO
M ODEL 5060
E LECTRI C ALC
®
P RO
M–R/C
C ONSTRUCTION M ASTER
®
M +
AC
+ / –
π
DC Res
Wire Res
milli– EqGrnd D/R Size
InsTripSEFuse
Starter
Cond Type
M–Type
125%
PF%
Eff%
90
° 75 ° Ind/Sync
1Ø 3Ø
Amb °
Cu/Al 60
°
FrAir
Prefs
√
___
x
x
2
2
8
3
0
456
79
1
On/C
Off
Volts
VA
Amps
Watts
ParSz
Length
Rcl
Stor
WireSz
DEFuse
InvTime
HP th
kilo–
VD%
O-Load
#XHHW
#THW
#THHN
HPmotor
CondSz
%
Grnd
Set
VD
60
Cu 125%WIRE SIZE
3O
5060-UG-B-Composite 4/4/03 12:37 PM Page 1

5060-UG-B-Composite 4/4/03 12:37 PM Page 2

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 calcula-
tor, it has intuitively labeled “electrical
keys” and conforms to the 2002 and
future National Electrical Codes , allow-
ing you to solve Code-related problems
quickly and accurately. The most com-
mon NEC tables are now at your finger-
tips!
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.
5060-UG-B-Composite 4/4/03 12:37 PM Page 3

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 & Derated Wire Sizes
♦Voltage Drop Wire Sizes, % and
Actual Voltage Drops, Voltage
Drop Distances and Wire Resis-
tances
♦Grounding Conductors Sizes
♦Motor Full-Load Amps
♦Overload Protection Sizes
♦NEMA Starter Sizes
♦Conduit Sizes
♦And much more!
5060-UG-B-Composite 4/4/03 12:37 PM Page 4

User’s Guide — 3
Table of Contents
Installing NEC Updates . . . . . . . . . . . . . .4
Key Definitions . . . . . . . . . . . . . . . . . . .5
Preference Settings . . . . . . . . . . . . . . .26
Default Settings . . . . . . . . . . . . . . . . .27
Basic Math Operations . . . . . . . . . . . . .28
Percent Calculations . . . . . . . . . . . . . .28
Memory Functions . . . . . . . . . . . . . . . .29
Kerchoff’s Law . . . . . . . . . . . . . . . . . .30
Motor Horsepower . . . . . . . . . . . . . . . .34
Ampacity Wire Sizing . . . . . . . . . . . . . .36
Voltage Drop . . . . . . . . . . . . . . . . . . .42
Ground Conductor Wire Size . . . . . . . . .48
Equip. Grounding Conductor Wire Size . .49
Fuse and Circuit Breaker Size . . . . . . . .50
Starter Size . . . . . . . . . . . . . . . . . . . .51
Overload Protection Size . . . . . . . . . . . .51
Conduit Size . . . . . . . . . . . . . . . . . . . .52
Error Codes . . . . . . . . . . . . . . . . . . . .57
Battery Information . . . . . . . . . . . . . . .57
2002 NEC References . . . . . . . . . . . . . .58
Updating Future Code Revisions . . . . . . .58
Settings . . . . . . . . . . . . . . . . . . . . . . .59
Warranty . . . . . . . . . . . . . . . . . . . . . .60
Legal Notices . . . . . . . . . . . . . . . . . . .64
5060-UG-B-Composite 4/4/03 12:37 PM Page 5

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 2005).
To upgrade your unit, follow the instruc-
tions 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
section on the back of your calcu-
lator.
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.
5060-UG-B-Composite 4/4/03 12:37 PM Page 6

User’s Guide — 5
Key Definitions
Standard Calculator Functions
[On/C] — On/Clear
Turns on power. Pressing once clears
the last entry and the display. Pressing
twice clears all non-permanent values.
[Off] — Off
Turns all power off. Clears the memory
and most internal registers.
[+] [–] [x] [÷] [=]
Arithmetic operation keys.
[0] – [9] & [•]
Used for keying in numbers.
[%] — Percent
Four function percent key.
[ ] Back Space Function
Used to delete entries one keystroke at
a time (unlike the On/C function, which
deletes the entire entry).
5060-UG-B-Composite 4/4/03 12:37 PM Page 7

6 — ElectriCalc Pro
[Set] — Second Function
Accesses the secondary functions
shown above the keys when pressed
prior to selection.
[Stor] — Store
Used to store values when pressed just
before a storage register (i.e., M+,
AMPS, VOLTAGE, etc.).
Displays: STOR.
[Rcl] — Recall
Recalls a value stored in a register
(e.g., to recall voltage drop % press
[Rcl] [VD%]). Displays: RCL.
[Set] [ + ] — Pi (π)
Constant = 3.141593
[Set] [–] — Change Sign (+/–)
Toggles the sign of the displayed value
(from positive to negative or from nega-
tive to positive).
[Set] [%] — x2
Squares the displayed value.
[Set] [ ] — Square Root ( x )
Square root function.
5060-UG-B-Composite 4/4/03 12:37 PM Page 8

User’s Guide — 7
[Stor] [0] — Cumulative Memory
Adds displayed value to Memory (e.g.,
10 [M+], 20 [M+], [Rcl] [M+] = 30).
Clears when the calculator is shut off.
[Rcl] [0] — Memory Recall
Displays the value saved in (M+).
[Rcl] [Rcl] — Display/Clear Memory
Displays and clears the value saved in
(M+).
[Set] [Rcl] — Clear Memory
Clears the value saved in (M+) without
changing displayed value.
Mode Set-up Functions
[Set] [x] — All-Clear (AC)
Resets all settings and values to their
default settings.
[Set] [÷] — Preferences
Use to set default settings or modes
(see “Preference Settings” page 26)
[Set] [1] — Single-Phase (1Ø)
Sets calculator to single-phase mode.
Displays: 1Ø.
5060-UG-B-Composite 4/4/03 12:37 PM Page 9

8 — ElectriCalc Pro
[Set] [3] — Three-Phase (3Ø)
Sets calculator to three-phase mode.
Displays: 3Ø.
[Set] [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 ([Set] [x]).
Defaults to 30°C (86°F). Amb° will
display when the ambient temperature
is other than 30°C (86°F). Displays:
Amb°.
NOTE: The temperature units can be
displayed in Celsius (°C) or Fahrenheit
(°F) by using the preference function
([Set][÷]).
[Set] [4] — Copper/Aluminum
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 [Set] [4] will
change the material type without
changing the size.
Displays: Al or Cu.
5060-UG-B-Composite 4/4/03 12:37 PM Page 10

User’s Guide — 9
[Set] [5] — Free Air (FrAir)
Sets calculator into Free Air mode,
which refers to NEC Table 310-17 for
wire size calculations. Displays: FrAir.
[Set] [6] — 60°C Wire Insulation
Sets calculator to 60°C wire insulation
type for wire size calculations. This is
the default setting. Displays: 60.
[Set] [7] — 75°C Wire Insulation
Sets calculator to 75°C insulation type
for wire size calculations.
Displays: 75.
[Set] [9] — 90°C Wire Insulation
Sets calculator to 90°C insulation type
for wire size calculations.
Displays: 90.
Electrical Functions
[kilo-] — Kilo-
This key is used with watts, amps,
volts, and volt-amps to identify “kilo-”
values.
[Set] [kilo-] — Milli-
This key sequence is used with other
keys watts, amps, volts, and volt-amps
to identify “milli-” values.
5060-UG-B-Composite 4/4/03 12:37 PM Page 11

10 — ElectriCalc Pro
[Amps] — Amps
Enters or calculates amps (using volts
and VA or watts). Displays: AMPS,
KAMP or mAMP.
[Volts] — Volts
Enters or calculates volts (using amps,
HPth, and VA or watts). Default value is
240 volts. Displays:VOLT, KV, or mV.
[Set] [Volts] — DC Resistance
Calculates and displays DC resistance.
Displays: OHMS.
[VA] — Volt-Amps
Enters or calculates volt-amps (using
amps, volts and horsepower or watts).
Displays:VA, KVA, or mVA.
[Watts] — Watts
Enters or calculates watts (using amps,
volts, and VA or horsepower).
Displays:WATT, KW, or mW.
[Set] [Watts] —Power Factor
Enters or calculates power factor per-
centage (based on watts and VA). De-
faults to 100%. Entered or calculated
power factors greater than 100% will
result in an error. Displays: PF%.
5060-UG-B-Composite 4/4/03 12:37 PM Page 12

User’s Guide — 11
[HPth] — Horsepower (Theoretical)
Enters or calculates theoretical horse-
power (based on Amps, VA, watts,
efficiency%, PF%, and/or volts). 1.0
HPth correlates to 746 watts at 100%
efficiency. Displays: HPth.
[Set] [HPth] — Efficiency
Enters or calculates the percent ratio
between real power (watts) and theo-
retical horsepower. Default: 100%.
Entered or calculated efficiencies
greater than 100% will result in an er-
ror. Displays: EFF%.
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.
5060-UG-B-Composite 4/4/03 12:37 PM Page 13

12 — ElectriCalc Pro
[Set] [8] — Induction/
Synchronous Motor Toggle
Toggles between induction and syn-
chronous motor types. Displays: SYNC
(synchronous) or IND (induction - de-
fault).
[HPmotor] — 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 alu-
minum); 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).
[WireSz] — Wire Size/Ampacity
Enters or calculates wire size based on
ampacity and voltage drop, if a voltage
drop length has been entered.
5060-UG-B-Composite 4/4/03 12:37 PM Page 14

User’s Guide — 13
♦ 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.
♦ 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, dis-
plays the minimum wire ampacity rat-
ing.
[Set] [WireSz] — 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%.
5060-UG-B-Composite 4/4/03 12:37 PM Page 15

14 — ElectriCalc Pro
[ParSz] — Parallel Size
Used to find the size of parallel conduc-
tors using amperage and an entered
quantity of wires. Parallel wire size
computations smaller than 1/0 are dis-
played 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, calcu-
lates the applicable wire size for that
quantity of wires in parallel.
Displays: PAR WIRE SIZE.
♦
Second Press
Displays the maximum adjusted am-
pacity of the calculated parallel wire
size. Displays:WIRE A.
NOTE: No adjustments are made for
deration.
[Set] [ParSz] — 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 4 wires, or
when the unit is in Free Air mode.
5060-UG-B-Composite 4/4/03 12:37 PM Page 16

User’s Guide — 15
♦ First Press
Calculates the derated wire size, if you
have entered the number of wires, for
example, 4 [Set] [ParSz]).
Displays: D/R WIRE SIZE.
♦ Second Press
Displays the maximum adjusted am-
pacity 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 %.
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.
5060-UG-B-Composite 4/4/03 12:37 PM Page 17

16 — ElectriCalc Pro
[VD%] — 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 avail-
able, “nonE” will display since the volt-
age 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 %.
[Length] — 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 Prefer-
ence function ([Set] [÷]).
[Set] [Length] — Wire Resistance
Displays the actual resistance per
1,000 feet of the wire size in [WireSz]
based on NEC Chapter 9, Table 8.
Displays: OHMS WIRE.
5060-UG-B-Composite 4/4/03 12:37 PM Page 18

User’s Guide — 17
Ground Function Keys
[Grnd] — 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.
5060-UG-B-Composite 4/4/03 12:37 PM Page 19

18 — ElectriCalc Pro
[Set] [Grnd]
— Equipment Ground (EqGrnd)
This function uses NEC Table 250-122
to compute the minimum equipment
grounding conductor size, given an
entered amperage rating or setting for a
over-current device up line (i.e., 300
[Set] [Grnd]).
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 conduc-
tor size for the entered amp rating.
Displays: EQPG WIRE SIZE CU.
♦ Second Press
Displays the aluminum grounding con-
ductor size.
Displays: EQPG WIRE SIZE AL.
5060-UG-B-Composite 4/4/03 12:37 PM Page 20