Generators · Informational
What Size Generator Do I Need?
Size a generator around essential loads, startup surges, fuel, transfer method and realistic operating margin.
Make a load list
Write down the appliances and circuits you intend to operate together. Separate essential and optional loads.
Find running watts
Use appliance labels, manuals or reliable measurement rather than generic guesses when accuracy matters.
Account for surge
Identify motors, compressors and pumps that may need extra starting power.
Choose margin
Select a generator that can handle the expected combination without living at its absolute limit.
Plan the connection
Generator size is only one part of the system. Transfer equipment, cords, grounding/bonding requirements and local electrical rules also matter.
Useful next steps
Safety note: Electricity can cause shock, fire, equipment damage and utility hazards. Use qualified professional guidance for permanent wiring, transfer equipment or grid-connected work.