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IBI Residential Load Calculation Workshee~ f .
Worksheet# 4 1'.>WO OI Vat ~~ (Revised 01 /09/08) f I .
WORKSHEET BA: ED ON A STANDARD SERVICE 6l. L l:J: Af I
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o\ '10-Q ~~ This ~r shee ~C stand3:d calculatio.n Art. 220.1 thr~ug 220:61) ~\ G~0~, G ,,. 111ay1Je used for a single farmly, two-farmly, or three-farmly dwellmg. o G'l 'v ' r· ?' " / / .v ~<("" .~ / /
(;O ~e. \~ "/(. J!/ OJE:This calculation must be used for two-family dwellings.
<"J?} ,t,, G IL" ht" L d 431 f '57t1.Uflfl !to& CiA "' enera 1g mg oa
Small Appliance Circuits @ 1500 watts ea.
(Minimum is 2 per unit)
10500
6000
watts
watts
I 3
I 4
I s
I s
2 Laundry Circuit(s)@ 1500 watts ea. (Minimum is 1 per unit)
Total lines 1, 2 & 3
First 3kw of Sub-total General Lighting Load (line 4 above)@ 100%
Subtract line 5 from line 4
3000 watts
19500 watts
3000 watts
16500 watts
7
8
11
12
Enter 35% ofline 6 5775 watts
Total lines 5 & 7 TOT AL GENERAL LIGHTING LOAD 8775 watts
Range and Electric Clothes Dryer Load
Refer to the following to determine the range load. When using the Note*, substantiate your calculations using
actual nameplate ratings on line 9. Enter the total range loads on line 10.
A. One range* (not over 12 KW rating each): Enter 8000 watts on line 10. watts one
family
two
B. One range* (over 12 KW rating each): Enter the sum of 8000 watts plus
400 watts for each KW that the range exceeds 12 KW on line 10.
C. Two ranges* (not over 12 KW rating each):
Enter 11000 watts on line 10.
D. Two ranges* (over 12 KW rating each): Enter the sum of 11000 watts
plus 550 watts for each KW that the range exceeds 12 KW on line 10.
E. Three ranges* (not over 12 KW rating each):
three Enter 14000 watts on line 10.
family F. Three ranges* (over 12 KW rating each): Enter the sum of 14000 watts
plus 700 for each KW that the range exceeds 12 KW on line 10.
watts
11000 watts
watts
watts
watts
*Note: For each dwelling unit, the load for a counter-mounted cooking unit and NOT more than TWO wall-
mounted ovens may be calculated by adding the nameplate rating of the individual appliances and treating the
total as the equivalent to one range.
Calculations:
TOTAL RANGE LOAD 11000 watts
To determine clothes dryer load -enter 5000 watts (or nameplate rating -whichever is larger) for each clothes
dryer.
Clothes Dryer(s) -Unit 1 5000 watts
Clothes Dryer(s) -Unit 2 5000 watts
Clothes Dryer(s) -Unit 3 watts
TOT AL DRYER LOAD 10000 watts
TOT AL RANGE AND DRYER LOAD 21000 watts
P.I ;"(
• ·. '
~----.
TOTAL
QTY
IBI Residential Load Calculation Worksheet
Worksheet # 4 continued
(Revised 01/09/08)
FIXED APPLIANCE LOAD
(Appliances which are fastened in place).
Do not include electric ranges, clothes dryers, or HV AC equipment.
Elect. Permit No.
Include water heaters, disposals, dishwashers, trash compactors, microwave ovens, etc.
List each appliance load separately. (For two and three-family dwellings, list the quantity of each
appliance and the sum of the nameplate ratings (in watts) separately):
Fixed Appliances DISP TOTAL of ALL units
Unit #1 800 Unit #2 800 Unit #3
Fixed Appliances TOT AL of ALL units
Unit #1 800 Unit#2 800 Unit #3
Fixed Appliances DW TOT AL of ALL units
Unit #1 800 Unit#2 1200 Unit #3
Fixed Appliances TOT AL of ALL units
Unit #1 Unit#2 Unit #3
Fixed Appliances MICRO TOT AL of ALL units
Unit#1 Unit#2 Unit #3
Fixed Appliances TOT AL of ALL units
Unit #1 Unit#2 > Unit #3
Fixed Appliances TOT AL of ALL units
Unit#1 Unit#2 Unit #3
Fixed Appliances TOTAL of ALL units
Unit#1 Unit #2 Unit #3
----''--------1
SUB-TOTAL FIXED APPLIANCE LOAD
If there are three or less appliances in this section, enter the
Sub-Total Fixed Appliance Load on line 13.
If there are four or more appliances in this section, enter 75% of the
Sub-Total Fixed Appliance Load on line 13, use line below for calculating.
* 0.75 = 0.00
TOT AL FIXED APPLIANCE LOAD
HVACANDOTHERLOADS
TOTAL QTY All loads @ 100% (Volts X Amps= Watts)
*Nameplate Heat Pump Compressor Loads TOT AL of ALL units
Unit#2 Unit #3
TOTAL of ALL units
Unit #3
*Nameplate Air-conditioning Loads TOTAL of ALL units .-"'~~.--~~~~1"."!IMllll!'!l'""~-:---:-1~~~~-
U nit #1 Unit #2 Unit #3 ~~~'--~~~--"'-
*Nameplate Blower Motor Loads TOTAL of ALL units -----ir------
U nit #2 Unit #3
TOTALHVACLOAD
*Where it is unlikely that two or more noncoincident loads will be used simultaneously, it shall be
permissible to use only the LARGEST load(s) that will be used at one time for calculating the total
load of the service.
IBI Residential Load Calculation Worksheet
Worksheet# 4 continued
(Revised 01/09/08)
Other loads @ 100%
Elect. Permit No.
Examples are sump pumps, sewage pumps, whirlpool motors, attic fans, swimming pool equipment,
garage door openers, etc.
List each appliance load separately. (For two and three-family dwellings, list the quantity of each
and the sum of the nameplate ratings (in watts) separately):
Other Load BOILER PUMP TOTAL of ALL units
Unit #1
Other Load
Unit #1
Other Load
Unit #1
Other Load
Unit#1
Other Load
Unit #1
Other Load
Unit #1
Other Load
Unit #1
Other Load
Unit#1
200 Unit#2 200 Unit #3
TOT AL of ALL units
Unit#2 Unit #3
TOT AL of ALL units
Unit#2 Unit #3
TOT AL of ALL units
Unit#2 Unit #3
TOTAL of ALL units
Unit#2 Unit #3
TOT AL of ALL units
Unit#2 Unit #3
TOT AL of ALL units
Unit#2 Unit#3
TOTAL of ALL units
Unit#2 Unit #3
TOT AL OTHER LOADS
HVACandOTHERTOTALLOADS
CALCULATE THE SERVICE LOAD
TOT AL GENERAL LIGHTING LOAD
TOTAL RANGE AND DRYER LOAD
TOTAL FIXED APPLIANCE LOAD
TOTAL HV AC AND OTHER LOADS
TOTAL LOAD
400 watts
400 watts
8775 watts
21000 watts
5200 watts
400 watts
35375 watts
TOTAL LOAD Service Voltage = Minimum Service Ampacity
35375 watts 240 volts = 147.40 amps