.TOPIC:
Contents
Square Feet            Cooking            Electric Heat  
Small Appliance        Heating            Continuous 
Laundry                Cooling            Four or More  

Fixed Appliance        Motor Loads        Service Info       
Customer Info          Note               Service REQ#       

Reports                Data Base          Help on Help      
Command Buttons        Service Schedule   Formulas  

Demand Calculation  Special Keys  Maximum Field Length 

Database Repair Utility         Database Packing Utility     

.TOPIC:
Special Keys

* F1 Help       -  Displays a help message about the
                   task you are performing.

* F2 Search     -  Displays a list box to find records. Press
                   the first letter of the name to jump to
                   that location.

* ENTER or TAB  -  Signal the computer to accept an entry
                   that you have made, and move the cursor
                   to the next field.

* SHIFT + TAB   -  Accept this entry and move the cursor 
                   back to the previous field.

* ALT + HOT KEY -  Used to select a menu item or command 
                   button function.

* ESC           -  Cancel the task you are performing and
                   exits the program. 
                   
* Up Arrow      -  Accept this entry and move the cursor 
                   to the previous field.

* Down Arrow    -  Accept this entry and move the cursor 
                   to the next field.

* Page Up       -  When at the customer name, page up will 
                   move to the previous record. 

* Page Down     -  When at the customer name, page down will 
                   move to the next record. 

* Home          -  Move the cursor to the beginning of the 
                   current field.

* End           -  Move the cursor to the end of the 
                   current field.

.TOPIC:
Demand Calculation

The Single Dwelling Demand Calculation evaluates the 
loads of a new or existing single dwelling. Calculate 
the required service size in accordance with ARTICLE 220 - 
BRANCH-CIRCUIT AND FEEDER CALCULATIONS. Produce Reports  
for the general and optional methods. Complies with NFPA 70 
National Electrical Code 1993 edition.

PRINT SINGLE DWELLING FORM: 
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Print a form that can be used IN THE FIELD to collect the 
information for the demand calculation.

.TOPIC:
Square feet

Enter the square feet of floor area from the outside 
dimensions of the building. The computed floor area 
shall not include open porches, garages, or unused 
or unfinished spaces not adaptable for future use. 

Enter the living space.

REF: 220-3(b), 220-11, tables 220-3(b), 220-11

.TOPIC:
Small appliance

Enter the quantity of 20 ampere, two wire, 
small appliance branch circuits.

REF: 220-4(b), 220-16(a), 220-11, table 220-11

.TOPIC:
Laundry

Enter the quantity of 20 ampere, two wire, 
laundry branch circuits.

REF: 220-4(c), 220-16(b), 220-11, table 220-11

.TOPIC:
Heating

Enter the total wattage of the heating system. 

In the case of a heat pump, if supplementary heat is not on
at the same time as the heat pump the smaller load need not 
be added to the total.

Electric Heat  Continuous  Four or More   

.TOPIC:
Electric Heat

Pressing the space bar will place an X inside the box. 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If the heat is electric put an X in the box 

This is used for the Optional Calculation Method to 
determine if the heating load can be calculated at 65 
percent of the nameplate rating(s) of electric space heating, 
if less then four separately controlled units.



Continuous  Four or More 
 
.TOPIC:
Continuous

Pressing the space bar will place an X inside the box. 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
If the heat is electric and the usual load is expected 
to be continuous at the full nameplate value put an X
in the box. 

If the heating is not continuous, however, it is a heat 
pump with the compressor load larger than the Supplemental 
load put an X in the box.   

REF: Table 220-30(1)
   
Electric Heat  Four or More  
   
DEFINITION OF CONTINUOUS = A load where the maximum current 
                           is expected to continue for three 
                           hours or more.   REF: Article 100

.TOPIC:
Four or More

Pressing the space bar will place an X inside the box. 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If the heat is electric and is four or more separately 
controlled units put an X in the box. 


This information is used for the Optional Calculation 
Method to determine if the Heating load can be 
calculated at 40 percent of the nameplate rating(s) of 
electric space heating for four or more separately 
controlled units. 

REF: 220-30.

Electric Heat  Continuous     

.TOPIC:
Cooling

Enter the total wattage of the cooling system. This value 
will also be compared against the Motor loads of the fixed 
appliance schedule to determine 25% of the largest motor.

REF: 220-21

.TOPIC:
Dryer

Enter the wattage of the electric dryer. For the general 
method if an electric dryer is present the minimum demand
load is 5000 watts. for the optional method the dryer is 
calculated at nameplate.

REF: 220-18

.TOPIC:
Cooking

Enter up to three electric ranges or cooking appliances. The
minimum wattage is 1751 to a maximum of 12,000. The program 
will automatically classify each category according to column 
A,B or C and apply the demand factors accordingly.  In addition 
when calculating two or three units the result will be compared 
against column A to give the lowest allowable demand.


REF: 220-19

.TOPIC:
Motor Loads

Enter the name, volts and amps for the Fixed appliance that 
are motor loads, such as well pump, compactor, vent fan, 
disposal, pool motor, etc. This group will be compared with 
each other as well as the Cooling load to determine 25% of 
the largest motor.

REF: 220-17, 430-24, 430-25, 430-26

        Table 430-148 Full-Load Currents in Amperes
          Single-Phase Alternating-Current Motors
  ════════════════════════════════════════════════════════
   HP         115v         200v         208v         230v
  ────────────────────────────────────────────────────────  
    1/6        4.4          2.5          2.4          2.2
    1/4        5.8          3.3          3.2          2.9
    1/3        7.2          4.1          4.0          3.6
    1/2        9.8          5.6          5.4          4.9
    3/4       13.8          7.9          7.6          6.9
  ──────────────────────────────────────────────────────── 
   1          16            9.2          8.8          8
   1½         20           11.5         11           10
   2          24           13.8         13.2         12
   3          34           19.6         18.7         17
  ──────────────────────────────────────────────────────── 
   5          56           32.2         30.8         28
   7½         80           46           44           40
  10         100           57.5         55           50
  ════════════════════════════════════════════════════════

.TOPIC:
Fixed appliance

Enter the fastened in place fixed appliances that are 
wattage loads, such as water heater, dishwasher, etc.

REF: 220-17, 430-24, 430-25, 430-26

.TOPIC:
Customer Info

Enter information about the customer.

The Name, City, State & Zip fields are indexed fields. 
The records will be displayed in alphabetical order 
based on the indexed field. 

The name field is the default index field. 

When at the customer name, Page Up will move to the 
previous record. Page Down will move to the next 
record. 

Special Keys  Help on Help  Data Base  

.TOPIC:
Note
This field will hold information up to 72 characters and
will print directly below the customer block. 


Frank & Mary Connoly
33 Peace Road
Hudson, NH 12345

Courtesy of ABC Electrical contractor 1-234-567-8901 

.TOPIC:
Service REQ#

This is the number that is issued from the local utility
company to reference a specific service or project.

.TOPIC:
Service Info
Examples of use:

Panel...... Square D 200 amp 40 circuit surface main breaker
Conductors. 4/0 AL conductor type XHHW in 2" PVC
Grounding.. One 5/8" X 8' rod in cellar under panel #4 cu 

Report 1... 155' run from pole 24-17 along driveway
Report 2... Granite State Electric Utility Co.  603-898-9798
Report 3... 15 spare circuits as of 3/12/93
Report 4... Lot #14
Report 5...
Report 6... Ran spare 2" PVC in trench for future fiber 
Report 7... Optics cable as per owners request

This will print on the reports when the long report 
is selected.

.TOPIC:
Reports
Produce reports for: 

1. The general or optional method for a new service 
2. The optional method for an existing service  
3. Long reports have the service information attached
4. Short reports have the calculation only

Reports can go to: 
1. Disk via an ASCII file that you can edit 
2. Go to printer port LPT1 thru LPT3

Report notes:
1. When sending a report to a file you may replace an existing
   file or append to an existing file.
2. When sending a report to the printer 1 to 10 copies can
   be printed at a time.

.TOPIC:
Data base

All records can be saved to disk in a data base file named
DEMAND.MDB. The data base will first show records on an 
ascending order based on the name field first.

Name   =   Name   ->  city  ->  state 
City   =   City   ->  name  ->  state
State  =   State  ->  name  ->  city
Zip    =   Zip    ->  name  ->  city

Example: The name index will sort based on the name field
         first, then as a sub-index it will sort on city 
         and lastly on state.

.TOPIC:
Help on help

Selecting a Help link:
----------------------
With a mouse - click on phrases outlined by two triangles.
With the keyboard - Press TAB or Shift-TAB to select a link.
Press ENTER to jump to that topic.

Scrolling the Help window:
--------------------------
With a mouse      - click on the horizontal or vertical 
                    scroll bars.

With the keyboard - press the cursor navigation keys.

Closing the Help window:
------------------------
With a mouse - double click on the window's control box icon.
               top left.

With the keyboard - press Esc or Ctrl-F4.

Contents - displays a table of contents for the application's
           Help. Press C to select Contents.

Search   - opens a dialogue box that lists all available Help
           topics. Select a topic from the list box and press 
           ENTER. Press S to select Search.

Back     - jumps to the last Help topic viewed. Press B to 
           select Back.

History  - lists the last 20 Help topics viewed. Jump to a
           topic by selecting from the list box and pressing 
           ENTER. Press T to select History.

Copy     - Copies the contents of the current Help topic into
           an edit area.  Select the text you want copied to 
           the Clipboard and choose Copy.  Choosing Copy 
           without selecting any text in the edit area copies 
           the entire Help topic to the Clipboard. Press P to 
           select Copy.

.TOPIC:
Command buttons
New rec....... Create a new record.

Update........ Update the current record. When a record 
               is changed in any way, a prompt to update
               will be requested.

Delete........ Delete the current record.

Prev.......... Move to the previous record in the indexing 
               sequence.

Next.......... Move to the next record in the indexing 
               sequence.

Find.......... Find a specific record. The search will take 
               place on the field that is the current index.

Calc.......... Bring up a pop up calculator.

Info.......... Toggle the service information screen.

Exit.......... Exit the program.

Esc........... The Esc button will move out of the program.

.TOPIC:
Database Packing utility

ISAMPACK purges records marked for deletion and recovers disk
space formerly used by deleted records in 32K blocks.

If you have deleted records from the data file the space that
the record used is still a part of the file.  

Syntax     ISAMPACK  DEMAND.MDB

Database Repair Utility   

.TOPIC:
Database Repair Utility


ISAMREPR recovers databases that become corrupted; it 
recreates them by systematically evaluating every table 
and index and using every piece of internally consistent
information in the file.

Syntax     ISAMREPR  DEMAND.MDB

Database Packing Utility   

.TOPIC:
Service schedule
                Conductor Types and Sizes
          RH-RHH-RHW-THHW-THW-THWN-THHN-XHHW-USE  
 ─────────────────────────────────────────────────────────
                       Aluminum or 
  Copper              Copper-Clad AL        Rating in Amps
 ─────────────────────────────────────────────────────────
   AWG                     AWG
    4                       2                    100
    3                       1                    110
    2                     1/0                    125
    1                     2/0                    150
  1/0                     3/0                    175
  2/0                     4/0                    200
  3/0                     250 kcmil              225
  4/0                     300 kcmil              250
  250 kcmil               350 kcmil              300
  350 kcmil               500 kcmil              350
  400 kcmil               600 kcmil              400
 ─────────────────────────────────────────────────────────
 
.TOPIC:  
Formulas

     OHM'S LAW
     ~~~~~~~~~
     Watts   =   E  x I    =   Volts  X  Amps
     Watts   =   E² ÷ R    =   (Volts squared) ÷ Ohm's
     Watts   =   I² x R    =   (Amps squared) X  Ohm's
     ───────────────────────────────────────────────────
     Volts   =   I X R     =   Amps X  Ohm's
     Volts   =   P ÷ I     =   Watts   ÷  Amps
     Volts   =   √(PxR)    =   Square of (Watts X Ohm's)
     ───────────────────────────────────────────────────
     Amps    =   P ÷ E     =   Watts   ÷  Volts
     Amps    =   E ÷ R     =   Volts   ÷  Ohm's
     Amps    =   √(P ÷ R)  =   Square of (Watts ÷ Ohm's)
     ───────────────────────────────────────────────────
     Ohm's   =   E ÷ I     =   Volts ÷  Amps     
     Ohm's   =   E² ÷ P    =   (Volts squared) ÷ Watts     
     Ohm's   =   P ÷ I²    =   Watts ÷  (Amps squared)     
     ───────────────────────────────────────────────────

.TOPIC:
Maximum field length

The Maximum Field Lengths for the various fields is the data
that will be saved in the data base record. If you type in a 
longer field it will not be saved in the data base file.

Customer Name ..... 24
Customer Address... 24
Customer City ..... 24
Customer State .... 24
Customer Zip ...... 24
Customer Note1 .... 70
Customer Note2 .... 70
Service Request ... 16
Fixed Name ........ 24
Motor Name ........ 24
Service Info ...... 40
