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Description |
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Download Code Calculators
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Code Calculators
Click here to see screenshots of
Code Calculators
Now updated to the 2011 NEC.
Includes Print Preview and Print
functions!
Updated to the 2011 NEC on
04/06/2011. New ambient
temperature ranges added and
appropriate changes made to
ampacity values from Table
310.15(B)(16).
Code Calculators has been
REVISED with Visual Basic 2010.
Code Calculators includes a Main
Menu where these five programs
can be selected.
(1) Raceway fill program
(2) Voltage
Drop program
(3) Table 310.15(B)(16)
program with a voltage drop
(4) 3-phase Voltage Drop
program using NEC Table 9
(5) Power, Watts,
Amperes calculation programs.
Explanatory notes and examples
are included.
This is a Visual Basic 2010 ClickOnce application that
downloads and installs on your
computer that includes a desktop
icon. It can be removed
using the windows control panel.
This program will check for
required components and
download and install missing
components. It has
been tested on Windows 7 ,
Vista, and XP. Note, the
.NET Framework 4 client file is
quite large (41 MB)
If Windows has been
Updated all the .NET Framework
components should already be
installed.
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The following
prerequisites are
required and if not
found will be
automatically installed: |
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Windows Installer
3.1
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Microsoft Visual
Basic PowerPacks
10.0
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Microsoft .NET
Framework 4 Client
Profile (x86 and
x64) (41 MB)
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Download Voltage Drop Calculator with Database Recorder
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Click here to see Screenshot
This is a
Visual Basic 2010 Program.
This program can save
calculations into a database
table for later retrieval,
modifying, or deletion.
This program uses the VD = 2KLI
/ CMA formula and is primarily
for smaller conductors where
inductive reactance is minimal.
This is a Visual Basic 2010 ClickOnce application that
downloads and installs on your
computer that includes a desktop
icon. It can be removed
using the windows control panel.
This program will check for
required components and
download and install missing
components. It has
been tested on Windows 7 ,
Vista, and XP. Note, the
.NET Framework 4 client file is
quite large (41 MB)
If Windows has been
Updated all the .NET Framework
components with the exception of
the SQL Server should already be
installed.
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The following
prerequisites are
required and if not
found will be
automatically installed: |
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-
Windows Installer
3.1
-
Microsoft Visual
Basic PowerPacks
10.0
-
Microsoft .NET
Framework 4 Client
Profile (x86 and
x64) (41 MB)
-
SQL Server Compact
3.5 SP2
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The below Calculators are written in JavaScript.
They run in a web page using Java
enabled Browsers. |
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3-Phase Voltage Drop
Calculator with Power Factor |
NEW This JavaScript calculator
runs in a web page. It uses Table 9 and Table 8 data to
calculate 8 different voltage
drops for comparison. For
3-phase, 3 wire in PVC,
Aluminum, and Steel conduit. |
Compact Conductor
Raceway Fill |
This webpage calculator is still online but a more complete raceway and
trough fill application is included in the Code Calculator suite. Select the wire insulation, wire size,
number of conductors, type of raceway, fill type either 25 per cent, 60
per cent or auto and this program finds the correct raceway size.
When only three conductors of the same size are selected the jamming
ratio is calculated and the user is alerted if the jamming ratio is
between 2.8 and 3.2 and the user is given the choice of upsizing the
raceway per Chapter 9 Table 1 FPN 2. Five unique compact conductor
sizes
can be entered. |
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Range Calculator |
NEW Select range ratings from 1 3/4
KW to 27 KW and number of ranges and this program determines the demand
load using Table 220.55 and Notes 1, 2 , and 3. Loads for up to 1000
ranges can be determined. Twelve examples from the NEC, textbooks, and
the author are included. |
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Table 310.15(B)(16) Conductor Size |
This webpage calculator is still online but
a better NEC Table 310.15(B)(16) application is included in the Code Calculator
suite. Enter the continuous
and noncontinuous load then select the conductor insulation, terminal temperature,
ambient temperature, number of current carrying conductors and this
program finds the correct wire size and maximum and minimum over current
protective devices and the respective size of the equipment grounding
conductors. Also includes special condition buttons for nipples,
AC/MC cable, equipment rated for continuous loads, and circuit is for
receptacles for cord and plug connected equipment. Conductor size
is automatically adjusted to the conditions according to the NEC.
Results are automatically entered into a voltage drop calculator that
calculates voltage drop with an option to increase wire size and
proportionately increase the equipment grounding conductor size.
Examples and notes on how programs operates are included. |
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Table 310.15(B)(16) Load |
Select the wire size,
conductor insulation, terminal temperature, ambient temperature, number
of current carrying conductors and this program finds the permitted load
and maximum and minimum over current protective devices and the
respective size of the equipment grounding conductors. Also
includes special condition buttons for nipples, AC/MC cable, and circuit
is for receptacles for cord and plug connected equipment. The
permitted load is automatically adjusted to the conditions according to
the NEC. Results are automatically entered into a voltage drop
calculator that calculates voltage drop with an option to increase wire
size and proportionately increase the equipment grounding conductor
size. Notes on how programs operates are included. |
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Table 310.15(B)(16) Parallel |
Select the wire size
starting at 1/0 AWG,
number of conductors in parallel, conductor insulation, terminal temperature, ambient temperature, number
of current carrying conductors and this program finds the permitted load
and maximum over current protective devices and the
size of the equipment grounding conductors. Also
includes special condition button for nipples. The
permitted load is automatically adjusted to the conditions according to
the NEC. Results are automatically entered into a voltage drop
calculator that calculates voltage drop with an option to increase wire
size and proportionately increase the equipment grounding conductor
size. Notes and example on how programs operates are included. |
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Motor
Branch Circuit |
Select motor hp from
1/6 to 450 hp, phase, type of motor, class of service, duty cycle,
conductor material type, ambient temperature, number of current carrying
conductors in raceway or cable, conductor insulation type, terminal
temperature, service factor, and temperature rise. This program
then determines motor branch circuit parameters that include wire size,
short-circuit and ground-fault protective device normal and maximum
values for all four types, conductor size, overload protection size,
disconnect size, controller NEMA size, and equipment grounding conductor
size when the motor nameplate full load amperes value is entered.
Required results are automatically entered into a voltage drop
calculator at bottom of page where voltage drop can be calculated that
permits increasing the conductor size to lower voltage drop. |
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Raceway Fill (not for compact conductors) |
This webpage
calculator is still online but the raceway and trough fill application
shown above is much more complete. Select the wire
insulation, wire size,
number of conductors, type of raceway, fill type either 25 per cent, 60
per cent or auto and this program finds the correct raceway size.
When only three conductors of the same size are selected the jamming
ratio is calculated and the user is alerted if the jamming ratio is
between 2.8 and 3.2 and the user is given the choice of upsizing the
raceway per Chapter 9 Table 1 FPN 2. Five unique conductors
can be entered. |
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Extended Raceway Fill |
This is the same as
the raceway fill calculator except the number of unique conductors is
entered and a calculator for any number of conductors is custom built in
the lower frame. Then select the wire insulation, wire size,
number of conductors, type of raceway, fill type either 25 per cent, 60
per cent or auto and this program finds the correct raceway size.
When only three conductors of the same size are selected the jamming
ratio is calculated and the user is alerted if the jamming ratio is
between 2.8 and 3.2 and the user is given the choice of upsizing the
raceway per Chapter 9 Table 1 FPN No. 2. Any number of
unique conductors can be entered. |
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Cable Raceway fill |
Enter the number of
unique cables and a calculator for the cables is custom built in the
lower frame. Then enter the diameter for each cable, select number
of cables, type of raceway, fill type either 25 per cent, 60 per cent or
auto. This program finds the correct raceway size. |
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Voltage Drop |
Select the material
either copper or aluminum, the size of the conductor, the voltage and
phase from a list of common voltages, then enter the one way circuit
length in feet, and load in amperes. This program finds voltage
drop, per cent voltage drop, and volts at end of circuit. |
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Voltage Drop for any voltage |
Select the material
either copper or aluminum, the size of the conductor, then enter the
voltage, the one way circuit length in feet, and load in amperes.
This program finds voltage drop, per cent voltage drop, and volts at end
of circuit. |
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Minimum conductor Size for Given Voltage Drop |
Select the material
either copper or aluminum, the size of the conductor, the voltage and
phase from a list of common voltages, then enter the maximum voltage
drop in per cent and load in amperes. This program finds minimum
conductor size, voltage drop and volts at end of circuit. |
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Maximum Length for Given Voltage Drop |
Select the material
either copper or aluminum, the size of the conductor, the voltage and
phase, then enter the volts, maximum voltage drop in per cent and load
in amperes. This program finds maximum conductor length in feet and volts at
end of circuit. |
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Power
Calculator P=ExI |
Enter power factor
and select single or three phase and kilowatts or watts then enter any
two values of power, volts, or amperes and calculate the remaining
answer. |
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Power
Calculator P=ExE/R |
Enter power factor
and select single or three phase and kilowatts or watts then enter any
two values of power, volts, or resistance and calculate the remaining
answer. |
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Power
Calculator P=IxIxR |
Enter power factor
and select single or three phase and kilowatts or watts then enter any
two values of power, amperes, or resistance and calculate the remaining
answer. |
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Ohm's
Law |
Enter any two
values of Volts, amperes, or resistance and calculate the remaining
answer. |
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Grounding Conductor Size |
This program reads
NEC Table 250.122. Select the overcurrent protective device from
the list that includes the standard overcurrent protective device sizes
from Section 240.6(A) and this program finds the sizes of both the
copper and aluminum equipment grounding conductors. |
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Grounding
Electrode Conductor Size |
This program reads
NEC Table 250.66. Select the size of largest copper service
entrance conductor or equivalent area for parallel conductors from the
list or select size of largest aluminum service entrance
conductor or equivalent area for parallel conductors from the list and
this program finds the sizes of either the copper or aluminum equipment
grounding electrode conductors. |
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Overcurrent Protective Device Size |
This program reads
NEC Section 240.6(A) that lists the standard sizes for circuit breakers
and fuses. Select to size up or down and enter the amperes and
this program finds the size of the overcurrent protective device. |
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Cable
Tray Pulling Tension |
This program is very
extensive and is used to set up long cable pulls in cable tray.
Examples are included. |
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Raceway Pulling Tension |
This program is
extensive and is used to determine pulling tension when pulling
conductors into raceways. Examples are include. |
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Offset Distance Between Bends and Developed Length |
This program is
calculates the precise distance between bends using trigonometry and
does not use the inaccurate Benfield method. A developed length
calculator is also included. |
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Advanced Voltage Drop |
This program
calculates voltage drop by finding the actual approximate operating
temperature of the conductor and using the conductor's resistance at
this temperature. |
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Excel OLD Table 310.16 Reader |
This Excel
spreadsheet reads Table 310.16 for
copper conductors only. This program is similar to the JavaScript
program that reads Table 310.16.
This program is not updated to the 2011 NEC and never will be. |
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Rare Special Links of Interest |
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steelconduit.org and
technical information for using steel conduit for grounding |
This site includes an
abundance of information about using steel conduit and EMT.
It also includes information
and a free computer program from two research studies conducted by
Georgia Tech. These research studies, and the GEMI (Grounding
ElectroMagnetic Interference) analysis software that was developed from
the studies, are available, free, to qualified users. |
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Building Code Source |
Download just about
any current Building Code for Free
and they are legal due to a court ruling in 2002. |
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Grounding
Diagrams |
Classic assortment of
grounding diagrams. Includes 17
system grounding diagrams for services and standby generators.
Click on thumbnails to see full diagram. |
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Charles Dalziel paper |
1961 presentation by
Charles Dalziel on the Deleterious Effects of Electric Shock. This
is an excellent source for persons wanting to learn about the early work
on fibrillation currents and not let go currents. (PDF format) |
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Article by
Gerald Newton |
Understanding the Neher-McGrath Calculation
and the Ampacity of Conductors |
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Special Neher McGrath Papers |
PDF files of various
classic papers on the current carrying capacity of conductors including
the famous Neher McGrath and Samuel Rosch Papers. Most of these
papers came from the Engineering Societies Library in New York City in
1993. (No longer in business) |
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Arc Flash Hazard Analysis |
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Duke
Computer Program |
Free
Duke computer program (in DOS) and PDF manual
used for calculating Incident energy.
This is
a zipped file and requires the Winzip utility for unzipping.
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The Other
Electrical Hazard: Electric Arc Blast Burns |
Excellent paper on Arc Flash
by
Ralph H. Lee,
IPSD 81-55, IA-18, No. 3, May/June 1982 (805k) PDF format. |
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Pressures
Developed by Arcs |
Another
excellent paper by Ralph H. Lee, Transactions on Industry Applications,
vol. 1A-23, No 4, July/August 1987 (959 k) PDF format. |
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ARCING FLASH/BLAST REVIEW from Bussman |
This
excellent paper is by
Tim Crnko
and
Steve Dyrnes.
This paper
highlights some of the findings that may help in safety management and
equipment selection. This paper concludes with some design
considerations that will help reduce the hazards of arcing faults.
PDF
format. |
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Arcwear
Site |
ArcWear is dedicated to
providing the best information possible on protection
from electrical arc hazards and flash fire conditions.
You'll find a robust library of the latest knowledge on
arc flash safety for your reference—regulations and test
videos, articles and books, industry links, heat
calculators and more.
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Electrician Calculators