---
title: "Arc Flash Calculator: IEEE 1584-2018 Incident Energy, Boundary & Arcing Current"
url: "https://scaleset.com.au/calculator/arc-flash"
description: "Free IEEE 1584-2018 arc flash calculator: incident energy in cal/cm², arc flash boundary and arcing current in both scenarios, all five electrode configurations."
updated: "2026-10-13"
standards:
  - "IEEE 1584-2018 (IEEE Guide for Performing Arc-Flash Hazard Calculations: the empirical model, Equations 1–25 and Tables 1–10)"
  - "NFPA 70E (Standard for Electrical Safety in the Workplace: the arc flash risk assessment, arc-rated PPE and labelling the incident energy result feeds)"
author: "Wisam Tozah (B.Eng (Electrical), MIEAust, CPEng, NER, NSW DBP, NSW PRE, APEC, IntPE(Aus))"
site: "ScaleSet"
license: "https://scaleset.com.au/terms"
usage: "Cite and link. Do not reproduce or train on this content."
---

# Arc Flash Calculator: IEEE 1584-2018 Incident Energy, Boundary & Arcing Current

Source: https://scaleset.com.au/calculator/arc-flash

Free, browser-based arc flash calculator implementing the IEEE 1584-2018 model (IEEE Guide for Performing Arc-Flash Hazard Calculations). From the open-circuit voltage, the three-phase bolted fault current, the electrode configuration and gap, the working distance and the protective device clearing time, it computes the arcing current, the incident energy at the working distance in cal/cm² and J/cm², and the arc flash boundary, in both of the standard's scenarios: the average arcing current and the lower bound one, each at its own clearing time, with the higher incident energy governing. It covers all five IEEE 1584-2018 electrode configurations (VCB, VCBB, HCB, VOA and HOA) from 0.208 kV to 15 kV, applies the enclosure size correction factor (with the shallow class below 600 V), runs the HCB arc at a breaker with the CT ring and no tube and takes the higher arrangement, flags inputs outside the model range, and names the arc-rated PPE step the result needs. The PDF report sets both scenarios side by side with the model range checks, the figures for the equipment label and the PPE guidance. The engine reproduces the IEEE 1584-2018 Annex D.1 worked example (12.979 kA arcing current, 12.152 J/cm² and a 1606 mm boundary) and matches the IEEE Arc Flash IE and Iarc Calculator (v2.6.6) to within 0.0003% across 205,200 input combinations.

The ScaleSet Arc Flash Calculator implements the IEEE 1584-2018 model to compute arc flash incident energy (in cal/cm² and J/cm²), the arc flash boundary and the arcing current for three-phase AC equipment from 0.208 kV to 15 kV. It covers all five IEEE 1584-2018 electrode configurations (VCB, VCBB, HCB, VOA, HOA), the enclosure size correction factor and the lower bound second scenario, and it is checked against the standard's Annex D.1 worked example and the IEEE Arc Flash IE and Iarc Calculator. It is a free, browser-based engineering tool that supports an arc flash risk assessment and is not affiliated with or endorsed by IEEE.

## Key facts

- IEEE 1584-2018 covers three-phase AC equipment from 208 V to 15 kV in five electrode configurations: VCB, VCBB, HCB, VOA and HOA.
- Incident energy is the heat at the working distance in cal/cm² or J/cm² (1 cal/cm² = 4.184 J/cm²), and arc-rated PPE must be rated at or above it.
- The arc flash boundary is the distance at which the incident energy falls to 1.2 cal/cm² (5.0 J/cm²), the onset of a second-degree burn.
- Incident energy is directly proportional to the clearing time: halve the time and the energy halves.
- The arcing current is lower than the bolted fault current: about a third to two thirds of it on a 400 V board, and about 90% at 11 kV.
- IEEE 1584-2018 runs two scenarios, at the average and at a lower bound arcing current, each at its own clearing time, and the higher incident energy governs.
- Doubling the working distance cuts the incident energy by about three to four times, depending on the electrode configuration.
- Above 40 cal/cm² arc-rated PPE is not relied on: the equipment is de-energised before work.
- The ScaleSet engine reproduces the IEEE 1584-2018 Annex D.1 worked example and matches the IEEE Arc Flash IE and Iarc Calculator (v2.6.6) to within 0.0003% across 205,200 input combinations.

## Who this page is for

Electrical engineers, power systems engineers, safety engineers and electrical contractors performing arc flash hazard analysis, incident energy studies and arc flash labelling for low-voltage and medium-voltage switchgear, motor control centres, panelboards and distribution equipment.

## Relevant standards

- IEEE 1584-2018 (IEEE Guide for Performing Arc-Flash Hazard Calculations: the empirical model, Equations 1–25 and Tables 1–10)
- NFPA 70E (Standard for Electrical Safety in the Workplace: the arc flash risk assessment, arc-rated PPE and labelling the incident energy result feeds)

## What this tool does

- Implements the IEEE 1584-2018 model end to end: arcing current (IEEE 1584 Eq. 1), the arcing current variation factor (IEEE 1584 Eq. 2), incident energy (IEEE 1584 Eq. 3–6), the arc flash boundary (IEEE 1584 Eq. 7–10) and the enclosure size correction factor (IEEE 1584 Eq. 11–15), with the three-model-voltage interpolation above 600 V.
- Runs both IEEE 1584-2018 scenarios, the average and the lower bound arcing current, each at its own clearing time, and reports the higher incident energy, so a slower trip at the lower current is never missed.
- All five electrode configurations (VCB, VCBB, HCB, VOA, HOA) with the coefficient set for each; for HCB it also runs the arc at a breaker with the CT ring and no tube and takes the higher arrangement.
- Returns the incident energy in cal/cm² and J/cm² at the working distance, the arc flash boundary in millimetres (the distance to 1.2 cal/cm²), both arcing currents, and the arc-rated PPE step that covers the result.
- Typical-equipment presets (15 kV and 5 kV switchgear and MCCs, low-voltage switchgear, MCCs, panelboards and cable junction boxes) fill in the electrode gap, enclosure size and working distance from IEEE 1584-2018 typical values.
- Flags every input outside the IEEE 1584-2018 model range (voltage, bolted fault current, electrode gap, working distance and the width at least four times the gap), and offers the shallow enclosure class only where it applies: below 600 V and under 508 mm high and wide.
- Verified: it reproduces the IEEE 1584-2018 Annex D.1 worked example (4.16 kV, 15 kA, VCB: 12.979 kA, 12.152 J/cm², 1606 mm) and matches the IEEE Arc Flash IE and Iarc Calculator (v2.6.6) to within 0.0003% across 205,200 input combinations in both scenarios, with 18 of those cases pinned in the test suite.
- PDF arc flash report: both scenarios side by side, the model range checks, the figures for the equipment label, the PPE guidance, a plan view of the boundary and the energy against distance, ready for the study record.

## How to calculate arc flash incident energy with IEEE 1584-2018

1. **Choose the electrode configuration** — Pick VCB, VCBB or HCB for conductors in an enclosure, or VOA or HOA for open air, to match the conductors where the arc would start. Horizontal conductors pointing out of the enclosure, or conductors ending in an insulating barrier, drive more energy towards the worker.
2. **Pick an equipment preset or enter the geometry** — Select a typical-equipment preset (switchgear, MCC, panelboard, cable junction box) to fill in the electrode gap, the enclosure size and the working distance from IEEE 1584-2018 typical values, or enter your own.
3. **Enter the voltage and fault level** — Enter the open-circuit line-to-line voltage in kV and the three-phase bolted fault current in kA at the equipment.
4. **Enter the clearing time for each scenario** — Read the upstream device's time-current curve at the arcing current the calculator shows, less any part fed from the load side, and enter it as the Arc Duration. Where the curve gives a longer time at the lower bound current, enter that as the Reduced-Case Duration.
5. **Read the incident energy, boundary and PPE** — The calculator returns the governing incident energy in cal/cm² and J/cm² at the working distance, the arc flash boundary, both arcing currents and the PPE arc rating step. Inputs outside the IEEE 1584-2018 model range are flagged.
6. **Export the report** — Export the PDF report: both scenarios side by side, the model range checks, the figures for the equipment label and the PPE guidance, for the study record.

## Arc flash incident energy under IEEE 1584-2018: a practical guide

### What the IEEE 1584-2018 arc flash model calculates

IEEE 1584-2018 (the IEEE Guide for Performing Arc-Flash Hazard Calculations) is the empirical model used worldwide to quantify the thermal hazard of an arcing fault. From the open-circuit voltage, the available three-phase bolted fault current, the electrode gap, the working distance, the clearing time and the electrode configuration, it predicts three numbers: the arcing current (the current that actually flows in the arc, always lower than the bolted fault current), the incident energy at the working distance (in cal/cm² and J/cm²), and the arc flash boundary (the distance at which the incident energy falls to 1.2 cal/cm², the onset of a second-degree burn).

The model is evaluated at three model voltages (600 V, 2700 V and 14 300 V) and interpolated to the system voltage above 600 V. The ScaleSet arc flash calculator implements it in full, including the enclosure size correction factor and the arcing current variation correction factor. It reproduces the IEEE 1584-2018 Annex D.1 medium-voltage worked example (12.979 kA arcing current, 12.152 J/cm² and a 1606 mm arc flash boundary), and it matches the IEEE Arc Flash IE and Iarc Calculator (v2.6.6) to within 0.0003% across 205,200 combinations of configuration, voltage, fault current, gap, distance and enclosure, in both scenarios.

### What is arc flash incident energy?

Arc flash incident energy is the thermal energy received on a surface, such as exposed skin, at a given working distance during an arcing fault, measured in calories per square centimetre (cal/cm²) or joules per square centimetre (J/cm², where 1 cal/cm² = 4.184 J/cm²). It is the number that sets the arc-rated PPE: the PPE arc rating must equal or exceed the incident energy at the working distance.

The reference threshold is 1.2 cal/cm² (5.0 J/cm²), the incident energy at which a person receives the onset of a second-degree burn. Incident energy rises with the available fault current and with the clearing time, falls steeply with distance, and varies strongly with the electrode configuration. IEEE 1584-2018 is valid for three-phase AC arcs from 0.208 kV to 15 kV.

### What is the arc flash boundary?

The arc flash boundary is the distance from the prospective arc source at which the incident energy falls to 1.2 cal/cm² (5.0 J/cm²). Anyone closer than the boundary during an arcing fault could receive at least a second-degree burn, so arc-rated PPE is required inside it. IEEE 1584-2018 derives the boundary by solving the incident energy equation for the distance at which the energy equals that threshold.

The arc flash boundary and the incident energy at the working distance together define the hazard printed on an equipment label: the boundary tells workers where protection begins, and the incident energy at the working distance tells them what arc rating that protection must have.

### What inputs does an IEEE 1584-2018 arc flash calculation need?

Six inputs: the electrode configuration (VCB, VCBB, HCB, VOA or HOA), the open-circuit system voltage (kV), the three-phase bolted fault current (kA), the gap between conductors (mm), the working distance from the arc to the worker (mm) and the clearing time of the upstream protective device (ms). Enclosed configurations also need the enclosure height and width, and below 600 V whether a small enclosure is shallow.

Each input has a validity range: voltage 0.208 to 15 kV; bolted fault current 0.5 to 106 kA at 600 V and below and 0.2 to 65 kA above; conductor gap 6.35 to 76.2 mm at 600 V and below and 19.05 to 254 mm above; a minimum working distance of 305 mm (12 in); and an enclosure width of at least four times the gap. The ScaleSet calculator flags any input outside these ranges, and its PDF report lists each check.

### What changed from IEEE 1584-2002 to IEEE 1584-2018?

IEEE 1584-2002 predicted incident energy with one empirical equation, adjusted by a factor for an enclosure or open air and another for the system grounding. IEEE 1584-2018 replaced it with five electrode-configuration models (three enclosed, two in open air), evaluated at three model voltages and interpolated to the system voltage, and dropped the grounding factor. It added an enclosure size correction factor for enclosures larger or smaller than the 508 mm test box, and an arcing current variation correction factor for a mandatory second, lower bound scenario.

Because the electrode configuration and enclosure size now change the answer materially, a study redone to IEEE 1584-2018 can differ substantially from a 2002 result for the same equipment, often higher for horizontal-electrode and barrier configurations. The ScaleSet calculator uses the 2018 model throughout.

### Electrode configuration is the most important input

IEEE 1584-2018 defines five electrode configurations, each with its own coefficient set: VCB (vertical electrodes in a metal box), VCBB (vertical electrodes ending in an insulating barrier in a box), HCB (horizontal electrodes in a box), VOA (vertical electrodes in open air) and HOA (horizontal electrodes in open air). The configuration captures where the arc is driven. The current in the conductors pushes the arc along them, away from the supply: down vertical conductors and away from a worker in front, but straight out of the enclosure from horizontal conductors that point at the opening. A barrier at the conductor ends stops the arc and throws the plasma outwards. That is why HCB and VCBB usually give more incident energy than VCB for the same fault.

Box configurations take the enclosure size correction factor, which adjusts the result for an enclosure larger or smaller than the 508 mm test box. Below 600 V an enclosure under 508 mm high and wide is classed Shallow when it is 203.2 mm deep or less; everywhere else it is Typical. For HCB the calculator also runs the arc at a breaker with the CT ring and no tube, the alternate coefficient set the IEEE Arc Flash IE and Iarc Calculator carries, and the higher of the two arrangements sets the result. Open-air configurations take no enclosure correction.

### Why arcing current and clearing time matter together

The arcing current is not just an output: it is the current at which the upstream protective device is read to find the clearing time. It is always below the bolted fault current, from under 20% of it at 208 V on a 100 kA fault, through about a third to two thirds on a 400 V board, to about 90% at 11 kV. A lower arcing current can mean a longer clearing time on an inverse-time device, and because incident energy is directly proportional to the clearing time, an accurate time matters as much as the current. Where motors or generation feed the fault from the load side, the device carries only the part arriving from upstream and trips later than the full arcing current suggests.

IEEE 1584-2018 also requires a second scenario at a reduced, lower bound arcing current, set by the arcing current variation correction factor, because the arcing current varies from one arc to the next. At the lower current the device may clear more slowly, and the higher incident energy of the two scenarios governs. The ScaleSet calculator takes a separate clearing time for each scenario and reports both, and EleCAD reads both off the device curve for every board in a drawing.

### How to lower arc flash incident energy

Clear the fault faster. Because incident energy is directly proportional to the clearing time, the biggest gains come from the protection: an instantaneous or short-time pickup set below the arcing current so the device trips on its fast band, an arc energy reducing maintenance setting switched on while people work, or a faster device. Check both scenarios, because a setting that clears the average arcing current quickly can still let the lower bound current run on its long-time curve.

Then increase the distance and reduce the exposure. Doubling the working distance cuts the incident energy by about three to four times, so remote operation, remote racking and longer tools work well. Lowering the fault level helps only if the device still clears quickly at the lower current, so check the clearing time again after any change. Above 40 cal/cm² no practical PPE is relied on and the equipment is de-energised before work.

### From incident energy to PPE and labels

The incident energy in cal/cm² at the working distance drives arc-rated PPE selection: the PPE arc rating (ATPV or EBT) must equal or exceed it. The arc flash boundary defines where arc-rated protection becomes necessary. The common arc rating steps of 4, 8, 25 and 40 cal/cm² band the result, and the calculator names the lowest step that covers it.

The incident energy feeds the arc flash risk assessment and the equipment label. IEEE 1584-2018 gives the incident energy; the risk assessment, PPE program and labelling follow the site's electrical safety rules, commonly drawn from NFPA 70E. The ScaleSet PDF report lists the figures a label carries: the system voltage, the arc flash boundary, the incident energy and its working distance, and the PPE arc rating. This calculator is an engineering estimate to support that assessment, and its results must be confirmed by a competent engineer against the actual protective-device coordination and site conditions.

## Key terms

- **Incident energy** — The heat a worker would receive at the working distance from an electrical arc, in cal/cm² or J/cm². Arc-rated PPE is chosen with an arc rating at or above it.
- **Arc flash boundary** — The distance from the arc at which the incident energy falls to 1.2 cal/cm², the onset of a second-degree burn. Arc-rated PPE is needed inside it.
- **Bolted fault current** — The prospective three-phase short-circuit current with zero fault impedance at the equipment. IEEE 1584-2018 predicts the arcing current from it.
- **Arcing current** — The current that actually flows through the arc, always lower than the bolted fault current because the arc has impedance of its own. The protective device is read at the share of it that the device carries.
- **Lower bound arcing current** — The reduced arcing current of the IEEE 1584-2018 second scenario: the average arcing current × (1 − 0.5 × VarCf). It can clear more slowly on an inverse-time device and so give the higher incident energy.
- **Clearing time** — The total time the upstream protective device takes to clear the arc, read on its time-current curve at the current it carries. Also called the arc duration. Incident energy is directly proportional to it.
- **Working distance** — The distance from the arc to the worker's face and chest during the task. IEEE 1584-2018 typical values are 457 mm for low-voltage panelboards and MCCs, 610 mm for low-voltage switchgear and 914 mm for 5 kV and 15 kV equipment.
- **Electrode configuration** — The IEEE 1584-2018 class of the conductor arrangement at the arc (VCB, VCBB, HCB, VOA, HOA). It sets the model coefficients and whether the enclosure size correction applies.
- **Enclosure size correction factor (CF)** — The factor that adjusts a box configuration's incident energy for an enclosure larger or smaller than the 508 mm test box. Below 600 V, a box under 508 mm high and wide and 203.2 mm deep or less is classed Shallow.

## Frequently asked questions

### What is arc flash incident energy and how is it calculated?

Incident energy is the heat a worker would receive at the working distance during an arcing fault, in cal/cm² or J/cm² (1 cal/cm² = 4.184 J/cm²), and it sets the arc rating the PPE must meet. IEEE 1584-2018 calculates it from the open-circuit voltage, the bolted fault current, the electrode gap and configuration, the enclosure size, the working distance and the clearing time: it finds the arcing current first, then the incident energy at its model voltages, interpolated to the system voltage above 600 V. This calculator runs that model in both of the standard's scenarios and reports the higher result. For example, a 400 V switchboard with 25 kA available that clears in 100 ms gives about 2.7 cal/cm² at 610 mm.

### What is the arc flash boundary and how is it calculated?

The arc flash boundary is the distance from the arc at which the incident energy falls to 1.2 cal/cm² (5.0 J/cm²), the onset of a second-degree burn. Anyone inside it needs arc-rated PPE. IEEE 1584-2018 finds it by solving the incident energy equation for the distance at which the energy equals that threshold, using the same voltage, fault current, gap, configuration, enclosure and clearing time. The calculator reports the boundary in millimetres for both scenarios and takes the one from the scenario that governs.

### Which electrode configuration should I use: VCB, VCBB, HCB, VOA or HOA?

Match the conductors where the arc would start, and think about where the arc is driven. The current pushes the arc along the conductors away from the supply. VCB (vertical conductors in a box) suits most switchgear and MCC compartments, where the arc runs down the conductors. HCB is horizontal conductors pointing out of the enclosure, which drive the arc straight at the worker. VCBB is vertical conductors ending in an insulating barrier, which throws the plasma outwards. VOA and HOA are vertical and horizontal conductors in open air. HCB and VCBB usually give more incident energy than VCB for the same fault. The equipment presets start from VCB; change the configuration if the conductors are horizontal or end in a barrier.

### Where does the clearing time come from in an arc flash calculation?

From the upstream protective device: it is the total clearing time read off its time-current curve at the current the device carries during the arc, never at the bolted fault current, and incident energy rises in direct proportion to it. On a radial feed that is the arcing current; where motors or generation feed the fault from the load side, the device carries less and trips later. IEEE 1584-2018 also runs a second scenario at the lower bound arcing current, which sits further left on an inverse-time curve and can clear more slowly. Enter the time at the average arcing current as the Arc Duration and, where the curve gives a longer time at the lower bound current, enter that as the Reduced-Case Duration. EleCAD reads both times off the device curve for every board in a drawing.

### How can I reduce arc flash incident energy?

Clear the fault faster first, because incident energy is directly proportional to the clearing time: set an instantaneous or short-time pickup below the arcing current, switch on an arc energy reducing maintenance setting while people work, or fit a faster device, and check the lower bound scenario too. Then increase the working distance: doubling it cuts the energy by about three to four times, so remote operation and remote racking are effective. Lowering the fault level only helps if the device still clears quickly at the lower current. Above 40 cal/cm² de-energise before work.

### Can IEEE 1584-2018 be used for arc flash studies in Australia?

Yes. Australia has no arc flash calculation standard of its own, and IEEE 1584-2018 is the model most Australian arc flash studies use. It covers three-phase systems from 208 V to 15 kV, so a 400/230 V switchboard runs on its low-voltage path and 11 kV switchgear on its medium-voltage path. The PPE program and labelling then follow the site's electrical safety rules, commonly drawn from NFPA 70E. The ScaleSet engine reproduces the IEEE 1584-2018 Annex D.1 medium-voltage worked example exactly.

### How accurate is this arc flash calculator?

It reproduces the IEEE 1584-2018 Annex D.1 worked example (12.979 kA arcing current, 12.152 J/cm² and a 1606 mm boundary) and matches the IEEE Arc Flash IE and Iarc Calculator (v2.6.6) to within 0.0003% across 205,200 input combinations: all five electrode configurations, 208 V to 15 kV, the fault current, gap and distance limits and every enclosure size branch, in both the average and the lower bound scenario. The only difference is the 0.03937 in/mm factor IEEE 1584-2018 prints for shallow enclosures. The accuracy of a study still rests on its inputs, above all the fault level and the clearing time.

### Is this free arc flash calculation software, or do I need a licensed package?

For one board or a few, it is the same calculation the licensed arc flash packages run: the full IEEE 1584-2018 model with both arcing current scenarios, the enclosure size correction and a PDF report, free in the browser with nothing to install (downloading the PDF needs a free account). A licensed network-study package earns its cost when the fault levels and clearing times have to come from one model of the whole network; EleCAD does that for every board in a drawing, reading each board's fault level and its upstream device's clearing time and printing an arc flash label per board, so the line between the two is scale, not method.

### What arc-rated PPE do I need for the calculated incident energy?

Arc-rated clothing and PPE with an arc rating (ATPV or EBT) at or above the incident energy at the working distance. Below 1.2 cal/cm² no arc rating is needed. Above it, the calculator places the result against the common arc rating steps of 4, 8, 25 and 40 cal/cm² and names the lowest one that covers it; above 40 cal/cm² the blast hazard is severe and the equipment is de-energised before work. The guidance is informational: NFPA 70E treats the incident energy analysis method and its PPE category tables as alternatives that are not mixed on one piece of equipment, and PPE selection belongs to the site's arc flash risk assessment.

### What goes on an arc flash label?

Under NFPA 70E, an equipment label carries the nominal voltage, the arc flash boundary and at least one of: the available incident energy with its working distance (or the PPE category, but not both), the minimum arc rating of clothing, or the site-specific level of PPE. The ScaleSet PDF report lists the figures an incident energy label needs, from the governing scenario: the system voltage, the arc flash boundary, the incident energy, its working distance and the PPE arc rating. EleCAD prints a label for every board in a drawing.

### How is arcing current calculated, and what is the arcing current variation factor?

Arcing current is the current that actually flows through the arc, always lower than the bolted fault current because the arc has impedance of its own: about a third to two thirds of it on a 400 V board and about 90% at 11 kV. IEEE 1584-2018 calculates it from the bolted fault current, the electrode gap and the configuration at its model voltages, interpolated to the system voltage, then applies the arcing current variation correction factor (VarCf) to get the lower bound arcing current for the second scenario: the average × (1 − 0.5 × VarCf). The calculator reports both, because the protective device has to be read at each: the lower current can clear more slowly and give the higher incident energy.

### What working distance should I use for an arc flash calculation?

The distance from the arc to the worker's face and chest during the task. IEEE 1584-2018 gives typical figures by equipment class: 457 mm (18 in) for low-voltage MCCs, panelboards and cable junction boxes, 610 mm (24 in) for low-voltage switchgear and 914 mm (36 in) for 5 kV and 15 kV switchgear and MCCs, with 305 mm (12 in) as the model's minimum. The equipment presets fill these in. Incident energy falls steeply with distance: doubling it cuts the energy by about three to four times, which the energy-versus-distance chart beside the result shows.

### What is the HCB breaker arrangement?

For horizontal electrodes in a box (HCB), the calculator runs a second arrangement beside the regular one: an arc at a breaker with the current transformer ring in place and no insulating tube, the alternate HCB coefficient set the IEEE Arc Flash IE and Iarc Calculator carries. It has the same arcing current and always gives a higher incident energy, by roughly 1.3 to 2.5 times, so the higher of the two arrangements sets the headline, the PPE and the boundary in each scenario, on the page, in the PDF and in EleCAD.

### Can I use IEEE 1584-2018 for single-phase or DC equipment?

No. IEEE 1584-2018 is built on three-phase AC arc tests from 208 V to 15 kV, so single-phase AC and DC equipment are outside the model this calculator implements. EleCAD skips single-phase boards rather than report a figure the model was not built for. DC arc flash needs a different method.

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## About this page

Methods built and reviewed by Wisam Tozah (CPEng, NER, MIEAust), Sydney, Australia. How the methods are tested and reviewed: https://scaleset.com.au/verification. ScaleSet is a design aid: your inputs and results are not reviewed or certified, and responsibility for the design stays with the engineer who issues it. Profile: https://scaleset.com.au/creator.

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