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How to Size a Home Standby Generator. Simply fill in the blanks with the appropriate information and the sizing calculator will tell you what size generator you should purchase

 

Essential Circuit Sizing Guide

How to Size a Home Standby Generator

Mike, the Generator Expert
By
Product Expert
Electric Generators Direct
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Essential Circuit Sizing Guide
Put down the calculator! Sizing an essential circuit standby generator is extremely easy.

Simply input the number and size of the essential circuits you want to power during an outage. Our interactive sizing wizard will calculate the rest.

If your circuits donít exactly match, your electrician can always swap larger circuits with smaller circuits, but not vice versa.



None
15-Amp 120V

None
15-Amp 120V

None
15-Amp 120V

None
15-Amp 120V

None
15-Amp 120V

None
15-Amp 120V
20-Amp 120V

None
30-Amp 240V
40-Amp 240V

None
15-Amp 120V
20-Amp 120V

None
15-Amp 120V
20-Amp 120V

None
15-Amp 120V
20-Amp 120V

None
15-Amp 120V
20-Amp 120V

None
20-Amp 240V

None
40-Amp 240V
50-Amp 240V


This calculator is intended for estimating purposes only. Actual power requirements of high demand appliances vary widely by brand, model and capacity. Always have a qualified electrician analyze your specific requirements before making a purchase decision.
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