SCCR Equipment Label Worksheet Chart

Use this worksheet after the calculator result to document available fault current, equipment SCCR, component ratings, feeder protective device, label date, and review status.

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Quick reference table

An SCCR equipment label worksheet is not a short-circuit current calculator. It records whether the calculated available fault current is within the equipment short-circuit current rating, and keeps component-rating, protective-device, label, and AHJ review notes together.

SCCR label worksheet fields

SCCR label worksheet fields
Field	Record	Review use
Equipment identity	Panel, industrial control panel, disconnect, MCC, location	Ties the label to exact equipment
Fault-current basis	Available fault current, utility value, transformer, feeder length, study date	Shows what value the SCCR is compared against
SCCR basis	Marked SCCR, component ratings, combination rating, standard used	Identifies weakest link or listed combination
Protection basis	Upstream OCPD, fuse class, breaker, current limiting note	Protective device can affect evaluated rating
Label and review	Label date, reviewer, AHJ note, unresolved actions	Keeps future system changes visible

SCCR review decision lanes

SCCR review decision lanes
Decision lane	Document before acceptance	Why it matters
Available fault current changed	Transformer, service, utility, feeder, generator change	A previous label may no longer match the system
Component rating unclear	Starter, drive, contactor, terminal block, fuse holder, control transformer	One low-rated component can control the assembly
Current-limiting path used	Specific fuse or breaker series and manufacturer data	The rating may depend on exact protective device data
Field modification made	Added loads, controls, replacement parts, panel change	Modified equipment may need renewed evaluation

Formula basis

SCCR screen = equipment SCCR compared with available fault current at the equipment terminals, using the documented upstream protection and component-rating basis.

Available fault current is the calculator result or utility/study value at the equipment location.
Equipment SCCR is the marked rating or evaluated assembly rating.
Component rating basis identifies the lowest-rated component or approved combination rating path.
Label date and reviewer keep the result tied to a specific system condition.

Worked examples

Industrial control panel reviewRecord available fault current at the panel, marked SCCR, lowest-rated component, upstream fuse class, label date, and AHJ follow-up before energizing changes.

Service equipment changeAfter transformer or service changes, update available fault current, compare equipment SCCR, verify labels, and assign reviewer before closing the project record.

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

This worksheet records a review screen and does not perform a complete short-circuit study or certify equipment.
SCCR evaluation can depend on equipment listing, component combinations, current-limiting protective devices, manufacturer data, and system changes.
Available fault current should be updated when utility, transformer, service, feeder, generator, or equipment configuration changes.

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

Use this chart as a calculation record; verify adopted NEC SCCR and equipment-marking requirements, UL 508A or applicable product standard where used, manufacturer data, available fault-current study, upstream protection, local amendments, AHJ expectations, and qualified-person review before final acceptance.

How to use this chart

1Start with fault-current basisRecord the available fault current value, calculation date, utility or study basis, transformer, feeder, and equipment location.

2Trace the equipment ratingDocument marked SCCR, component ratings, listed combination basis, upstream protective device, and manufacturer data.

3Close the label recordAdd label date, reviewer, AHJ note, open actions, and triggers that require the record to be revisited.

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

Capture available fault currentWrite the value at the equipment terminals, calculation method, utility data, transformer data, and feeder assumptions.
Capture SCCR evidenceRecord marked rating, component list, protective device basis, standard or listing path, and manufacturer documentation.
Capture review statusList label date, reviewer, AHJ item, required corrections, and next review trigger.

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

Comparing equipment SCCR with a fault-current value from the wrong location or an old service configuration.
Assuming the enclosure or panelboard rating proves the assembly SCCR without checking components and protective devices.
Changing starters, drives, fuses, breakers, or transformer size without revisiting available fault current and the SCCR label record.

Frequently asked questions

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

Is SCCR the same as available fault current?

No. Available fault current is the system value at the equipment. SCCR is the equipment rating that must be compared with that value.

Can a calculator result certify the SCCR label?

No. The calculator result is one input. Equipment listing, component ratings, protective-device data, manufacturer instructions, and AHJ review still control acceptance.