Calculator guide
Electrical Load Calculator helps you explore the stated construction question. Start with the labelled inputs, then review the method, worked example and limitations before using a result.
Formula or method
For a resistive/DC load, connected current = watts/volts. The illustrative continuous-load allowance adds 25% of the entered continuous portion: adjusted watts = watts×(1+0.25×continuous percent/100).
How to use this calculator
- Set Connected Load (W). The interface starts with 7200; replace it with the value for your scenario.
- Set System Voltage (V). The interface starts with 240; replace it with the value for your scenario.
- Set Continuous Portion (%). The interface starts with 60; replace it with the value for your scenario.
- Compare the result with the worked example, then vary one assumption at a time so you can see what changes.
Worked example
7200 W at 240 V gives 30 A connected current. At 60% continuous portion, adjusted load is 8280 W and adjusted current is 34.5 A.
Understanding the result
Compare the output with the electrical load calculator worked example using exactly the same inputs. A different assumption or rounding convention can produce a different displayed result; the output does not establish personal or professional suitability.
Limitations and assumptions
- Not a demand-factor calculation, code-compliant service design, AC power-factor model, or breaker recommendation. Qualified electrical review is required.
- The worked example demonstrates the stated assumptions, not a recommendation about your personal circumstances.
Frequently asked questions
Which inputs should I check first?
For Electrical Load Calculator, check Connected Load, System Voltage, Continuous Portion. Keep the displayed units and select options consistent; do not treat default values as recommendations.
Why might my result differ from another tool?
Compare the other tool's electrical load calculator method, input units, rounding and assumptions. A matching title does not guarantee that both tools answer the same question.
Does a linked reference certify this result?
No. A reference can explain a formula or provide background for Electrical Load Calculator, but it does not endorse this website, validate personal inputs or establish professional suitability.
Sources
Educational and planning information only. Sources are attributed background or formula references, not endorsements. Verify consequential decisions with an appropriate qualified professional.