FLC means full-load current.
It is the current value used as the starting point for many motor-circuit calculations.
Before checking a motor circuit, you need the basic motor information:
- Phase
- Horsepower
- Voltage
Those three values are used to determine the motor FLC.
What Does FLC Mean?
Full-load current is the current associated with a motor operating at its rated load.
A motor’s FLC changes based on its horsepower, voltage, and phase.
For example, a 5 HP motor running at 230V single-phase will have a different FLC than a 5 HP motor running at 460V three-phase.
That is why phase, horsepower, and voltage need to be correct before running the calculation.
Why FLC Matters
FLC is used as the starting point for checking the motor circuit.
It helps determine:
- OCPD
- Wire size
- EGC size
A wrong FLC can lead to the wrong circuit result, so it is important to verify the motor phase, horsepower, and voltage first.
Quick Example
Say you are checking a motor with:
- Phase: single-phase
- Horsepower: 5 HP
- Voltage: 230V
Enter those values into the calculator.
The calculator finds the motor FLC and then uses that result to show the motor-circuit information.
How Sparky Toolbox Helps
The Sparky Toolbox Motor Calculator keeps the basic motor-circuit calculation in one place.
Enter:
- Phase
- Horsepower
- Voltage
The calculator shows:
- FLC
- OCPD
- Wire size
- EGC size
That gives you a faster starting point before selecting material or planning the motor circuit.
Important Reminder
Motor-circuit results can change based on the motor application, starting conditions, disconnect requirements, overload protection, equipment ratings, manufacturer instructions, and project requirements.
Always verify the motor information, equipment details, approved plans, and local requirements before installation.