EV charger cable loss estimate calculator

Calculate conduction loss and energy at supply boundary with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use conduction loss and energy at supply boundary to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Measured total loop cable resistance (ohms)
0.1
Current-duration segments JSON [[amps,hours],...]
[[16,2],[10,1]]
Supply voltage (V)
230
Conduction loss (kWh)
0.0612
Energy at supply boundary (kWh)
9.66
Modeled delivered energy after cable loss (kWh)
9.5988

Try another scenario

Measured total loop cable resistance (ohms)
0.11000000000000001
Current-duration segments JSON [[amps,hours],...]
[[16,2],[10,1]]
Supply voltage (V)
230
Conduction loss (kWh)
0.06732
Energy at supply boundary (kWh)
9.66
Modeled delivered energy after cable loss (kWh)
9.59268
Calculation method

Calculation method

Conduction loss (kWh)

Loss=sum I² R hours/1000; supplied energy=sum V I hours/1000.

Energy at supply boundary (kWh)

Loss=sum I² R hours/1000; supplied energy=sum V I hours/1000.

Modeled delivered energy after cable loss (kWh)

Loss=sum I² R hours/1000; supplied energy=sum V I hours/1000.

Symbols and units
a
Measured total loop cable resistance (ohms)
b
Current-duration segments JSON [[amps,hours],...]
c
Supply voltage (V)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Single-phase DC/resistive equivalent, constant voltage and measured loop resistance; no installation approval. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Single-phase DC/resistive equivalent, constant voltage and measured loop resistance; no installation approval.
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