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World electrical installation rules: PUE, NEC, IEC, GB, IS

Electrical installation rules around the world: PUE of Russia and the USSR, US NEC (NFPA 70), IEC 60364 Europe, Latin American codes, China (GB) and India (IS 732). Voltages, sockets, earthing, RCDs — compared in English, Russian and Hindi.

🇷🇺 PUE Russia: Rules for Electrical Installations
PUE (Rules for Electrical Installations) is the main Russian regulation for electrical design: earthing systems, RCDs, cable sizes, residential requirements. PUE 7th edition structure and differences from IEC.
🕰️ USSR PUE-6: history of Soviet electrical rules
PUE-6 (1985) and the PUE-7 transition: history of Soviet electrical installation rules, TN-C earthing, 220/380 V, PUE legacy in CIS countries.
🇺🇸 US NEC (NFPA 70): National Electrical Code
US National Electrical Code (NEC, NFPA 70): 120/240 V 60 Hz, AWG wiring, GFCI and AFCI protection, ampacity tables, differences from PUE and IEC.
🇪🇺 Europe: IEC 60364 and national codes (BS 7671, DIN VDE 0100, NF C 15-100)
European electrical installation rules: IEC 60364 / HD 60364, national codes of the UK (BS 7671), Germany (DIN VDE 0100), France (NF C 15-100). RCD, earthing and socket requirements in the EU.
🌎 Latin America: electrical installation rules (NOM, NBR 5410, RETIE, CNE)
Latin American electrical codes: Mexico (NOM-001-SEDE), Brazil (NBR 5410), Argentina (AEA 90364), Colombia (RETIE), Chile (NCh 4), Peru (CNE). Voltages, sockets, differences from NEC and IEC.
🇨🇳 China: electrical installation rules (GB 50054, GB 50303, JGJ 16)
Chinese electrical codes: GB 50054, GB 50303, JGJ 16, GB/T 16895 (IEC 60364). 220/380 V, GB 1002 sockets, TN-C-S/TT earthing, 30 mA RCDs.
🇮🇳 India: electrical installation rules (IS 732, IE Rules, National Electrical Code)
Indian electrical codes: IS 732:2019 (Electrical Wiring Code), IE Rules 1956, National Electrical Code. 230/400 V, IS 1293 sockets, IS 3043 earthing, RCD requirements.

World rules compared

PUE vs NEC: differences between Russian and US rules
PUE (Russia) vs NEC (US): 230/400 V vs 120/240 V, Schuko vs NEMA sockets, 30 mA RCD vs 4–6 mA GFCI, AWG vs mm² — key differences in tables.
PUE vs IEC 60364: differences between Russian and European rules
PUE and IEC 60364 are close (PUE-7 harmonized), but differ: voltage drop, mandatory verification, bathroom zones, EU national codes.
PUE vs China (GB 50054): differences between Russian and Chinese rules
PUE vs Chinese GB standards: 230/400 V vs 220/380 V, Schuko vs GB 1002 sockets, 30 mA RCDs match, fire RCD 300 vs 500 mA.
PUE vs India (IS 732): differences between Russian and Indian rules
PUE vs Indian IS 732: voltage matches (230/400 V) but sockets, earthing (TT vs TN-C-S), minimum sections and testing differ.
NEC vs IEC: differences between US and European rules
US NEC vs European IEC 60364: 120/240 V vs 230/400 V, GFCI vs RCD, AWG vs mm², verification, lightning — key system differences.
Sockets and voltages worldwide: complete country table
Voltage, frequency and socket types by country: Russia (C/F), China (GB 1002), India (IS 1293), US (NEMA), Europe (C/E/F/G), Japan (A), Australia (I) — table and compatibility.
RCDs worldwide: requirements by country
RCD requirements by country: Russia 30 mA (PUE 7.1.79), Europe 30 mA (IEC 4-41), US GFCI 4–6 mA, China 30 mA, India 30 mA, Brazil 30 mA — table, types, fire RCDs.
China (GB) vs USA (NEC): rules compared
Chinese GB standards vs US NEC: 220/380 V vs 120/240 V, GB 1002 vs NEMA sockets, 30 mA RCD vs 4–6 mA GFCI, mandatory clauses vs code inspections.
Europe (IEC) vs India (IS 732): rules compared
IEC 60364 vs Indian IS 732: voltage matches (230/400 V) but sockets (E/F/G vs D/M), earthing (TN vs TT), verification (EICR vs IS 732) differ.
PUE across CIS: Russia, Belarus, Kazakhstan — differences
How PUE applies across CIS: Russia (PUE-7), Belarus (TKP 45), Kazakhstan (PUE RK), Uzbekistan and others — common roots and national differences.

World electrical installation rules compared

Country / regionDocumentVoltageFrequencySocketsEarthing
🇷🇺 PUE — Rules for Electrical Installations (7th ed.)PUE — Rules for Electrical Installations (7th ed.)230/400 V50 HzType C / F (Schuko)TN-C-S, TN-S, TT
🕰️ PUE-6 — Rules for Electrical Installations (6th ed., 1985)PUE-6 — Rules for Electrical Installations (6th ed., 1985)220/380 V50 HzType C (Soviet standard, now F)TN-C (historically)
🇺🇸 NEC — National Electrical Code (NFPA 70)NEC — National Electrical Code (NFPA 70)120/240 V60 HzNEMA 5-15R etc.TN-C-S (grounded neutral + equipment ground)
🇪🇺 IEC 60364 / HD 60364 (EU national codes)IEC 60364 / HD 60364 (EU national codes)230/400 V50 HzType C/F, E/F, G (UK)TN-S, TN-C-S, TT, IT
🌎 NOM-001-SEDE, NBR 5410, AEA 90364, RETIE, NCh 4, CNENOM-001-SEDE, NBR 5410, AEA 90364, RETIE, NCh 4, CNE110–127 V and 220 V (by country)60 Hz (most), 50 Hz (Argentina etc.)NEMA (MX, CO), NBR 14136 (BR), Type I (AR)TN-C-S, TT (Brazil — TT/TN-S)
🇨🇳 GB 50054, GB 50303, JGJ 16, GB/T 16895 (IEC 60364)GB 50054, GB 50303, JGJ 16, GB/T 16895 (IEC 60364)220/380 V50 HzGB 1002 (3 flat pins)TN-C-S, TN-S, TT
🇮🇳 IS 732IS 732:2019, IE Rules 1956, National Electrical Code230/400 V50 HzIS 1293 (6 A / 16 A, 3 pins)TN-S, TN-C-S, TT

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