Motor Nameplate Data Worksheet Chart

Use this worksheet after the calculator result to keep motor nameplate FLA, table FLC, HP, voltage, phase, service factor, duty, starter type, and manufacturer notes in one record.

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Quick reference table

A motor nameplate data worksheet separates nameplate FLA from table FLC and formula estimates. Use it as a calculator-led record before conductor, overload, starter, VFD, starting-current, and branch-protection review.

Motor nameplate data record

Motor nameplate data record
Nameplate field	Record on worksheet	Downstream use
Motor identity	Equipment ID, location, manufacturer, model, serial	Connects result to the exact asset
Rating data	HP, voltage, phase, Hz, RPM, frame, enclosure	Supports FLC, starter, and replacement review
Current data	Nameplate FLA, table FLC, locked-rotor or code letter if available	Keeps current sources separate
Protection context	Service factor, duty, overload type, starter or VFD	Feeds overload and controller checks
Review notes	Manual, listing, environment, AHJ question, reviewer	Prevents calculator values from floating without context

Nameplate-to-calculator handoff

Nameplate-to-calculator handoff
Calculator path	Use the worksheet to keep	Do not collapse into
Full-load current	HP, voltage, phase, table FLC, nameplate FLA	One unlabeled amp value
Motor protection	Overload setting basis, branch protection screen, disconnect, controller	A single breaker-size shortcut
Starter sizing	Starter type, control voltage, overload range, duty, enclosure	Horsepower-only starter selection
Starting current	Locked-rotor basis, starter method, source stiffness, voltage-sag note	Steady-state ampacity

Formula basis

Motor record = nameplate HP + voltage + phase + FLA + service factor + duty + starter or drive assumptions.

Nameplate FLA is the manufacturer current printed on the motor and is not always the same as table FLC.
Service factor and duty affect overload and equipment review.
Starter or VFD assumptions determine which manufacturer instructions and protection path must be checked.
Table FLC remains visible when a branch-circuit step uses the adopted NEC motor table path.

Worked examples

Replacement motor recordRecord existing and replacement nameplate HP, voltage, phase, frame, FLA, service factor, enclosure, starter type, overload range, and manual notes before approving the swap.

VFD-fed fan motorKeep motor FLA, drive input current, drive output current, carrier-frequency note, cable instructions, and protection path together before conductor review.

Assumptions. Balanced load and line-to-line voltage assumptions behind this chart.

This worksheet records motor data and does not reproduce NEC motor tables or manufacturer sizing tables.
Different decisions can use table FLC, nameplate FLA, drive current, or measured current, so the value source must stay visible.
Final motor decisions depend on equipment listing, manufacturer instructions, adopted NEC edition, local amendments, and AHJ review.

Code and standard notes. Planning limits that should be checked before final equipment selection.

Use this chart as a field record; verify motor nameplate data, adopted NEC motor rules, manufacturer instructions, overload device data, starter or drive listing, local amendments, AHJ expectations, and qualified-person review before final sizing.

How to use this chart

1Capture the exact motorWrite asset ID, manufacturer, model, serial, HP, voltage, phase, RPM, frame, enclosure, FLA, service factor, and duty.

2Separate current sourcesLabel nameplate FLA, table FLC, starting-current basis, drive current, and measured current before using any downstream calculator.

3Route protection reviewUse the record to open motor protection, starter sizing, starting-current, and wire-size checks with the correct assumptions attached.

Worksheet checklist. Record source basis, review gaps, and assumptions before using the chart result.

Record nameplate valuesCapture all visible motor nameplate fields plus manual, environment, and replacement notes.
Record calculator valuesWrite table FLC, formula estimate, starting-current estimate, overload setting, and starter result with the source of each value.
Record review controlsList adopted NEC edition, manufacturer manual, starter or drive listing, AHJ note, and reviewer before closing the worksheet.

Common mistakes to avoid. Review these before turning chart current into an equipment decision.

Using a motor current value without labeling whether it came from nameplate FLA, table FLC, formula estimate, or measurement.
Selecting overloads, starter size, or VFD settings without recording service factor, duty, enclosure, and manufacturer instructions.
Replacing a motor from horsepower alone without checking voltage, phase, frame, speed, FLA, starter compatibility, and equipment listing.

Frequently asked questions

These answers explain how to use the chart without turning a quick reference into a final design decision.

Why make a nameplate worksheet if I already have a FLC chart?

The FLC chart helps with the table-current path. The nameplate worksheet records the manufacturer data that controls overloads, replacement checks, starter review, and equipment-specific decisions.

Should table FLC and nameplate FLA be the same?

Not necessarily. They may support different parts of the workflow, so both values should be labeled and kept with the calculator result.