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Free power system courses: ETAP load flow, short circuit, protection, arc flash and stability; protection relay settings and injection testing; substation design; transformer and switchgear testing; earthing and lightning protection; electrical design for loads, cables and breakers; IEC 61850 substation automation; and critical power and battery storage.
FreeFree ETAP course for electrical engineers: load flow, short circuit, protection and arc flash studies. Learning is free; the certificate is optional and paid.
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.
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.
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.
FreeThe utility side of SCADA, taught the way a substation automation engineer meets it: the IEC 61850 object model and its logical nodes, SCL files from ICD through SCD to CID, MMS reporting against GOOSE against Sampled Values, the engineering process a system configuration tool follows, testing from office simulation through factory and site acceptance to maintenance isolation, and the IEC 60870-5-101 and 104 link that carries the substation to the control centre.
FreeFree electrical design course for engineers: estimate loads, size cables and breakers, draw single-line diagrams. The certificate is optional and paid.
FreeThe electrical side of data centres, where the hiring is: 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 BESS course for electrical engineers: size storage, compare LFP and NMC, apply UL 9540A and NFPA 855. Free to learn; the certificate is optional and paid.
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.
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.
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.
Electrical Design Engineering covers the load, cable and breaker calculations every project starts with. ETAP Power System Analysis then models the whole network. IEC 61850 Substation Automation is for protection and substation engineers.
For testing and commissioning roles, take Protection Relays: Settings, Testing and Commissioning with Testing and Maintenance of Transformers and Switchgear. Design roles at utilities and consultancies add Substation Design and Earthing and Lightning Protection Design.