Voltage Drop Calculator (center load method).
Version 1.2  November, 2002
Designed by Roman Reicher for FREE distribution.
rreicher@tycoint.com
rreicher@att.net

Method based on example shown in NEC 1999 Handbook,
8th edition, article 215-2(d).
D.C. Wire Resistance based on NEC 1999, chapter 9, table 8.
D.C. Wire Resistance used for temperature correction calculated
per formula shown in NEC 1999, chapter 9, table 8 foot note.

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Main Form
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How to add a new Group to Group Selection pop-up list.

Click on Edit Group List button.
If your screen blinks, check computer desktop.
The Group List file could be minimized.
Add a Group Name line to the list.
Save and Exit.

Important!  Do not change file name of the Group file.
If the file name have changed the program will not 
be able to use this file.

How to create (edit) Device List for new (existing) Group.

Select desired Group in Group Selection pop-up list.
Click on Edit Device List button.
If Group does not exist you will be asked to create a new file.

Important!  File name must match the Group name.
If the file name have changed the program
will not be able to use this file.

First line of a Group file is reserved for a Group description.
It will be used by program and required for proper operation.
All others lines in the file will be treated as a descriptions,
separations, or as a current entrees depends on symbols
arrangement.

Generally, any line in the Group file is a description, which can be 
device description, sub-division in the list of devices, or just
an empty line to serve as a separation.  Only special case will be
a current line which must follow immediately after correspondent
device description line and must start with a * star character.  
Enter device current draw value in AMPS right after the * character.
The program will automatically round up this number to three
digits after decimal point.

Select Device button will open Device Selection Form.

Switching  One Way Circuit Length pop-up list from Feet to 
Meters or back will convert number entered in edit box 
next to it from one units to another.

If a number is entered in Max. Voltage Drop Allowed edit box
the program will also calculate max. circuit length possible 
for existing load.

Voltage Drop can be calculated in Volts or in percent to
Calculating Voltage entry.   This controlled by selection
in Max. Voltage Drop Allowed pop-up list.

If using of a temperature correction is desired, Wire Temperature
toggle box must be checked.  Other wise temperature of 75C will 
be used.

Wire Temperature pop-up list works in the same manner as Circuit
Length pop-up list converting a number next to it from Celcium to 
Fahrenheit and back.

To save Main Form initial setting click Save as Default button.

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Device Selection Form
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Use Append button to add another Group of devices.  This button
will allow addition of no more than two additional Groups.

Prev. button will recall your previews selection.

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Calculation Results Form
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Mark a Note toggle box to add the notes to calculations results.
Any checked Note will be added in accordance with it number.
The Edit buttons are used to create or edit the notes.

Important!  Do not change file name of the note file.
If the file name have changed the programwill not be
 able to use this file.

The Draw button will put the results of your calculations 
on the drawing.