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- CIRCALC.EXE version 2a, Copyright (C) 1988 G.K. Pace.
- Address all comments to:
-
- G.K. Pace
- 6921 Poplar Ridge Road
- Lewisville, N.C. 27023
-
- Data communications:
- direct- (919)945-4850 (2400/1200 baud)
- Email- node 151/60
-
-
- What it is...
- This program is used for determining the size of wire (copper!), and
- conduit (galv. rigid!) needed for various A-C circuits. Feeder calculations
- are limited to a 2% voltage drop, Branch and Motor calculations are limited
- to 3% voltage drop. Program creates a file for capture of the output, for
- later printing.
-
- Motor Calculations...
- This program inputs the horsepower of the motor, and the estimated maximum
- distance between the starter and the motor. The program then calculates the
- approximate FLA, the minimum conductor size, the approximate full load and
- voltage drop to arrive at the minimum conductor size which will provide a
- FLVD of less than 3%. It then prints to screen the conductor size, conduit
- size, and other usefull information.
-
- General considerations...
- This program generally follows the guidelines of the 1987 NEC, but should
- not be relied upon for absolute accurracy! In order to make the program
- useful, some general assumptions were required. How YOU use this program
- is YOUR responsibility... I will not accept any liability for any type of
- damages remotely or directly related to the use of this program!
- I have assumed the following in this program:
- - A-C circuit, 60 cycles.
- - 460V three phase for Motor calculations.
- - Power Factor of approximatly 80% (for voltage drop calc.)
- - Three THHN/XHHW conductors (for conduit size calc.)
- - 85 degree conductors, in conduit (for MINIMUM conductor size calc.)
- - The following conductor sizes; 14,12,10,8,6,4,2,1,1/0,2/0,4/0,350,500,
- parallal 4/0, parallal 350, parallal 500, parallal 750, etc...
- The following values are set as the limits for inputs to this program:
- -Length; 10 feet thru 5000 feet.
- -Horsepower; 0.001 thru 500 horsepower.
- -Voltage; 0.001 thru 600 volts.
- -Kilowatts; 0.001 thru 5000 KW.
-
- PLEASE READ THIS!!!
- I am releasing this program on a very limited basis, for the purpose of
- recieving constructive input from those who use it. I am retaining all the
- rights of authorship, as provided by the U.S. Copywrite laws. You may use
- this program for a limited time (upto 30 days) provided you contact me and
- inform me of the fact that you are using it. Following this "trial" period,
- authorization or licience for use MAY be granted for a nominal fee.
-
- You may tranfer this program to others you feel would find it usefull,
- provided you include this "README" file with it, HOWEVER the posting of
- this program for downloading, on public BBS systems and other means of
- indescriminant distribution is not to be done with PRIOR authorization!
-
- If you find it usefull, please let me know... if you find fault with it,
- please let me know... I will attempt to incorporate into future revisions
- those suggestions I recieve which would improve it's usefullness. This is
- version 2a, released 01-16-1987. Please indicate which version you have,
- and from whom you obtained it, when communicating to me!
-
- Thank you!
- G.K. Pace
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