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Electrical engineering from the load schedule to the finished panel, free and complete: electrical design for loads, cables and breakers, ETAP for load flow, short circuit, protection and arc flash, motor control and control panel design and building, with notes, quizzes and an optional verifiable certificate.
FreeFree course for electrical beginners: read PLC wiring diagrams, then build, cool and test a UL 508A control panel. The certificate is optional and paid.
FreeFree beginner motor control course: read ladder diagrams, wire starters, build reversing and braking circuits. The certificate is optional and paid.
FreeFree ETAP course for electrical engineers: load flow, short circuit, protection and arc flash studies. Learning is free; the certificate is optional and paid.
FreeFree electrical design course for engineers: estimate loads, size cables and breakers, draw single-line diagrams. The certificate is optional and paid.
FreeThe electrical basics every technician needs, in the order you use them: charge, voltage, current and resistance; Ohm's and Kirchhoff's laws; AC and DC, single and three phase; power, energy and power factor; the multimeter and CAT ratings; cables, fuses, breakers, earthing and RCDs; IEC and NEMA symbols and schematics; relays, contactors and motors; safe isolation; and a fault-finding walkthrough.
FreeProtection relays from the CT to the commissioning record: faults and zones, CTs and VTs, fuses and IDMT curves, overcurrent and earth-fault grading by hand, transformer differential and REF, distance, motor and generator protection, numerical relays and COMTRADE, then primary and secondary injection, trip-circuit and stability tests, and maintenance.
FreeWork safely on and near electrical equipment: how shock and arc flash injure, risk assessment, the electrically safe work condition, lockout and tagout, approach boundaries, arc-flash incident energy, PPE categories and labels, energised work permits, live-dead-live testing, and how national rules, with India's CEA 2023 regulations as the worked example, add duties such as an Electrical Safety Officer.
FreeRun, read and record the field tests that keep transformers, breakers, cables, motors and batteries in service: insulation resistance and PI, winding resistance, turns ratio and vector group, tan delta and SFRA, oil and DGA, breaker timing and contact resistance, switchgear thermography, VLF cable tests, motor tests, earth resistance and battery capacity, then turn the results into a maintenance plan.
FreeDesign an earthing system and lightning protection that pass inspection: TN, TT and IT systems, soil resistivity by the Wenner method, rod, plate and strip electrodes to IS 3043 and BS 7430, conductor sizing with the adiabatic equation, IEEE 80 touch and step voltage and grid design, bonding, the IEC 62305 risk assessment, air terminals and the rolling sphere, SPD selection, special cases and testing.
FreeTurn a set of electrical drawings into a priced bill of quantities: read the drawings and specification, take off points, cables by route length, containment, boards, luminaires, earthing and lightning protection, apply labour units and wastage, build rates from material, labour, plant, overheads and margin, lay out the BOQ in Excel, compare tenders, and value variations through to the final account.
FreeHow a data centre and its critical MEP systems are proved before go-live: the commissioning process, OPR and basis of design, commissioning levels L1 to L5, FAT and SAT, electrical pre-functional tests, protection injection, UPS, battery, generator and ATS testing, load banks and heat load tests, chilled water flushing and hydro tests, liquid cooling, BMS and EPMS point-to-point checks, integrated systems testing, the issues log and handover.
FreeThe wiring regulations an electrical designer, inspector or site engineer works to every day, taught from the IEC 60364 method with BS 7671:2018+A4:2026 as the worked example: the structure of the standard, earthing arrangements, automatic disconnection and Zs, RCD types, overcurrent protection and selectivity, cable sizing with correction factors, voltage drop and the CPC check, selection and erection, AFDDs and SPDs, bathrooms, PV, EV charging and batteries, inspection and testing, certificates and condition reports, and Gulf utility rules.
FreeThe 2026 National Electrical Code (NFPA 70) for people who design and install: how the code is arranged, Article 110 working space and terminations, branch circuits and services, the new Article 120 load calculations for dwellings and commercial buildings, ampacity and voltage drop, overcurrent protection and taps, grounding and bonding, raceway and box fill, motors, transformers, hazardous locations, and PV, energy storage and EV charging.
FreePower quality for electrical engineers in plants, buildings, utilities and data centres: sags, swells, transients, flicker and unbalance; harmonics from drives, UPS, IT loads and inverters; THD, TDD, K-factor and resonance; IEEE 519-2022 limits at the point of common coupling and the IEC 61000 family; Class A measurement and Python analysis; reactors, detuned capacitor banks, passive and active filters, active front ends and multipulse drives; and a harmonic study in the free OpenDSS simulator.
FreeDiesel generating sets from the engine and alternator to the panel: ISO 8528 ratings, excitation and the AVR, governors and droop, DSE, ComAp, DEIF and Woodward controller concepts, automatic mains failure sequences and timers, transfer switches and neutral switching, synchronising and check-sync, kW and kVAr load sharing, multi-set and mains paralleling, generator protection by ANSI number, sizing and derating, commissioning, maintenance and troubleshooting, ending in an AMF and two-set synchronising scheme.
FreeThe electrical side of data centres: the power path from grid to rack, tiers and redundancy, UPS and generators, the calculations, load flow, short-circuit and arc flash studies, PUE, monitoring, and what AI GPU racks change.
FreeA short, practical foundation in thermal imaging for plant work: what the camera actually measures and what it never sees, emissivity and reflected apparent temperature, loaded electrical surveys and three-phase comparison, motors and bearings and couplings, building envelope and lagging and moisture, solar PV hot cells and substrings, and the route survey and written finding that turn a pretty picture into a work order.
FreeDesign a 33/11 kV or 132/33 kV substation on paper: substation types, single-line diagrams and bus schemes, equipment ratings, fault levels, BIL and creepage, clearances in plan and section, busbar sizing, earthing and shielding, battery and charger sizing, control panels and SCADA signals, cables and lighting, civil interfaces, and energisation.
FreeWork safely and competently with electrical and instrument equipment where gas, vapour or dust can explode: gas groups and temperature classes, zones and classification drawings, EPLs and Ex marking, Ex d, e, n, i, p, m, q and t, the intrinsic safety entity calculation, cable glands, IEC 60079-17 inspection, and permits and gas testing. It covers the knowledge base of CompEx units Ex01 to Ex04.
FreeEnergy management and energy auditing for plants and buildings: energy units and the electricity bill, the ISO 50001 energy management system clause by clause, energy reviews, EnPIs and baselines by regression and CUSUM, metering and IPMVP measurement and verification, the audit method and instruments, then motors, pumps and fans, compressed air, chillers and lighting, boilers and steam, and project economics in cost units.
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Electrical Design
Free internship: 4 weeks, a free certificate and nothing to buy. The Engineer-verified internship adds an engineer's review and the graded certificate.
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Electrical lab
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Electrical design
Roles that ask for this skill, 586 open in this country now. Free to see and to apply. We are not a recruitment agency.
See rolesTechnical work is judged on what you can do: wiring, commissioning, finding a fault. Doing a task yourself teaches more than watching it a second time, and a lab lets you try it safely before you meet real equipment. It does not replace working on real hardware.