Calculation Templates
Excel spreadsheets and fillable PDF worksheets for cable schedules, motor load lists, relay settings records, arc flash worksheets, and earthing design records. Open in Excel, Google Sheets, or LibreOffice.
42 items available · All free to download
Cable Schedule
Free cable schedule template Excel download for electrical engineering. Columns for tag, from/to, voltage, phases, load, cable size, installation method, voltage drop, protective device.
Motor Load List
Free motor load list template Excel download for electrical engineering. Columns for tag, description, kW, voltage, FLA, efficiency, PF, starting method, diversity factor, demand kVA.
Arc Flash Worksheet
Free arc flash boundary calculation worksheet PDF. Fillable form with fields for system voltage, fault current, working distance, electrode configuration, incident energy, PPE category.
Relay Settings Record
Free protection relay settings record template Excel download. Columns for relay tag, make/model, location, CT ratio, pickup, TMS, curve type, highset, test date, engineer sign-off.
Earthing Design Record
Free earthing system design record template Excel download. Soil resistivity measurements, rod/plate/grid conductor sizing per AS/NZS 3000 BS 7430 IEEE 80, earth resistance test records.
Switchboard Schedule
Free switchboard schedule template Excel download. Pre-formatted for circuit details, protection devices, cable sizes. Professional engineering layout.
Arc Flash Label
Free arc flash warning label templates per IEEE 1584-2018 and NFPA 70E. Includes incident energy, flash boundary, PPE category, approach distances. Editable.
Motor Starting Study
Free motor starting study template Excel. Covers DOL, star-delta, soft starter & VFD starting methods. Voltage drop assessment and cable sizing inputs.
Testing Checklist
Free electrical testing and commissioning checklist. Covers insulation resistance, earth continuity, loop impedance, RCD testing, polarity. All standard test methods.
PFC Study Template
Free power factor correction study template. Calculate required kVAR, select capacitor banks, assess harmonic risks. Step-by-step methodology included.
Voltage Drop Record
Free voltage drop calculation record template Excel. Pre-formatted for circuit details, cable data, √3·I·(Rcosφ+Xsinφ)·L results per IEC 60364. No signup.
Cable Sizing Record
Download a free cable sizing calculation record template Excel. Columns for load data, derating factors, cable selection, voltage drop, and short-circuit withstand per IEC 60364, BS 7671, AS/NZS 3008. No signup required.
Short-Circuit Record
Download a free short-circuit calculation record template Excel per IEC 60909-0:2016. Columns for node impedance, Ik", ip peak, breaking current, thermal withstand, and equipment rating verification. No signup required.
Arc Flash Study Record
Download a free arc flash hazard study record template Excel per IEEE 1584-2018 and NFPA 70E. Columns for equipment data, arcing current, incident energy, PPE category, and approach boundaries. No signup required.
Lightning Risk Assessment
Download a free lightning protection risk assessment record template Excel per IEC 62305-2. Columns for structure data, flash density, collection area, risk components R1-R4, and protection level. No signup required.
Max Demand Record
Download a free maximum demand assessment record template Excel per AS/NZS 3000, BS 7671, and NEC Art 220. Columns for load groups, demand factors, diversity, phase assignment, and transformer sizing. No signup required.
PFC Sizing Record
Download a free power factor correction sizing record template Excel per IEC 60831 and IEEE 1036. Columns for existing PF, target PF, required kVAr, bank selection, detuning, and harmonic filter. No signup required.
Load Schedule
Download a free electrical load schedule template Excel per IEC 60364 and NEC Art 220. Columns for equipment tag, rated power, phases, demand factor, feeder ref, and annual energy. No signup required.
Earth Resistance Record
Download a free earthing resistance test record template Excel per IEEE 81 and BS 7430. Columns for electrode data, soil type, test method, instrument, probe spacing, and pass/fail. No signup required.
IR Test Record
Download a free insulation resistance test record template Excel per IEC 60364-6 and BS 7671. Columns for circuit data, test voltage, L-N, L-E, N-E readings, temperature, humidity, and pass/fail. No signup required.
Motor Starting Record
Free motor starting calculation record template Excel. Document starting current, voltage drop, protection settings per IEC 60034 and NEC Art 430. No signup required.
Transformer Sizing Record
Free transformer sizing calculation record template Excel. Document load analysis, demand factors, and transformer selection per IEC 60076 and IEEE C57. No signup required.
Battery Sizing Record
Free battery sizing calculation record template Excel. Document duty cycle, capacity, ageing and temperature factors per IEEE 485 and IEC 60896. No signup required.
Conduit Fill Record
Free conduit fill calculation record template Excel. Document cable areas, fill ratios, and jam ratio checks per NEC Chapter 9 Table 1 and AS/NZS 3084. No signup required.
Discrimination Study
Free protection discrimination study record template Excel. Document upstream/downstream device coordination per IEC 60947 and BS 7671. No signup required.
Zs Calculation Record
Free earth fault loop impedance calculation record template Excel. Document Zs values, BS 7671 Table 41 limits, and disconnection time verification. No signup required.
Protection Device Schedule
Free protection device schedule template Excel. Document MCB/MCCB/ACB ratings, trip settings, and discrimination status per IEC 60947 and BS 7671. No signup required.
Earthing Electrode Schedule
Free earthing electrode schedule template Excel. Document electrode types, soil resistivity, measured resistance, and connections per BS 7671 and IEEE 80. No signup required.
Lighting Schedule
Free lighting and small power schedule template Excel. Document luminaire types, socket outlets, circuit loads, and phase assignment per IEC 60364 and NEC. No signup required.
Motor Schedule
Free motor schedule template Excel. Document motor ratings, starting methods, VFD tags, cable and protection details per IEC 60034 and NEC Art 430. No signup required.
Instrument Loop Schedule
Free instrument and control loop schedule template Excel. Document loop numbers, signal types, cable tags, I/O points per IEC 61511 and ISA S5.1. No signup required.
Zs Test Record
Free earth fault loop impedance test record template Excel. Document measured Zs, Ze, R1+R2 values and pass/fail per BS 7671 and IEC 60364-6. No signup required.
RCD Test Record
Free RCD tripping time test record template Excel. Document trip times at 1× and 5× IΔn, ramp test, pass/fail per BS 7671 and IEC 61008. No signup required.
Continuity Test Record
Free continuity test record template Excel. Document R1+R2 values, ring circuit cross-connection, pass/fail per BS 7671 Part 6 and IEC 60364-6. No signup required.
Polarity Test Record
Free polarity and phase rotation test record template Excel. Document polarity checks, phase sequence, motor rotation per BS 7671 and IEC 60364-6. No signup required.
Power Quality Record
Free power quality and harmonics measurement record template Excel. Document THD, voltage imbalance, flicker per IEC 61000-4-30 and IEEE 519. No signup required.
Thermal Imaging Record
Free electrical thermal imaging survey record template Excel. Document hotspot temps, severity classification, action priority per IEC 62446 and NFPA 70B. No signup required.
Design Basis Template
Free electrical design basis template Excel. Document project standards, supply data, voltage drop limits, cable criteria, and design margins. No signup required.
SLD Data Template
Free single line diagram data collection template Excel. Document equipment tags, ratings, fault levels, cables per IEC 61082 and IEEE 315. No signup required.
Cable Tray Fill Template
Free cable tray and raceway fill calculation template Excel. Document tray dimensions, cable areas, fill ratio per NEC Art 392 and IEC 61537. No signup required.
Harmonic Assessment
Free harmonic distortion assessment template Excel. Document IEEE 519 compliance, Isc/IL ratio, THD limits, and mitigation per IEEE 519 and IEC 61000-3-6. No signup required.
Arc Flash Label
Free arc flash warning label template PDF. NFPA 70E Art 130 and NEC 110.16 compliant. Print on weatherproof label stock. No signup required.
Other Categories
Pocket Reference Cards
Credit-card-sized (85×54mm) reference cards with cable current ratings, derating factors, color codes, and conversions. Print on cardstock, laminate, and keep in your wallet or toolbox.
Wall Posters
A3 landscape posters comparing cable data across all four major standards. Print in color and pin in your design office, workshop, or training room.
Inspection & Commissioning Checklists
A4 single-page checklists for cable installation, switchboard commissioning, and earthing system testing. Photocopy and distribute to your site team.
Toolbox Talk Cards
A5 landscape safety briefing cards. 5-minute presentations with attendance records for compliance documentation. Cover arc flash and safe isolation procedures.
Standards Guides
2-page A4 summary guides for AS/NZS 3008, BS 7671, IEC 60364, NEC, and multi-standard comparison. Step-by-step cable sizing methodology with exact table and clause references. Print and keep at your desk.