       
847-831-4471
|
SAMPLE
SYSTEM CALCULATIONS
|
|
We've listed below some examples approximating the generator size based upon the loads shown. In many cases, generator manufacturers have designed their units to allow for short term motor starting or overload conditions. Your generator sizing may vary depending on your specific loads and conditions or whether the unit proposed is equipped with this feature.
|
| Example #1
| Quantity |
Equipment
Description |
Estimated
Starting Wattage |
|
1
|
1/3 HP Furnace (no air conditioning) |
2,380 W
|
|
1
|
1/2 HP Sump Pump |
3,600 W
|
|
1
|
Refrigerator |
2,500 W
|
|
Emergency lighting total |
2,000 W
|
| |
Starting wattage
for these connected loads |
10,480 W
|
Recommended Generator Size = 8 KW or 8,000 watts |
| Example #2:
| Quantity |
Equipment
Description |
Estimated
Starting Wattage |
|
1
|
1/3 HP Furnace (no air conditioning) |
2,380 W
|
|
1
|
1/2 HP Sump Pump |
3,600 W
|
|
1
|
Refrigerator |
2,500 W
|
| |
Emergency lighting total |
2,000 W
|
|
1
|
1/2 HP Ejector Pump |
3,600 W
|
|
1
|
Freezer |
2,500 W
|
| |
Starting wattage for these connected loads |
16,580 W
|
Recommended Generator Size = 10 KW or 10,000 watts |
| Example #3:
| Quantity |
Equipment
Description |
Estimated
Starting Wattage |
|
1
|
1/3 HP Furnace (no air conditioning |
2,380 W
|
|
1
|
1/2 HP Sump Pump |
3,600 W
|
| |
1 Refrigerator |
2,500 W
|
| |
Emergency lighting total |
2,000 W
|
|
1
|
1/2 HP Ejector Pump |
3,600 W
|
|
1
|
Freezer |
2,500 W
|
|
1
|
Coffee Maker |
1,200 W
|
|
1
|
Microwave Oven |
2,250 W
|
| |
Additional general lighting |
2,000 W
|
| |
Starting Wattage for these loads |
22,030 W
|
Recommended Generator Size = 15 KW or 15,000 watts |
| STEP #1 . . . Purchaser’s Check List
|
Top |