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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.

PUE vs NECPUE vs IEC 60364PUE vs ChinaPUE vs IndiaNEC vs IECSockets and voltages worldwideRCDs worldwideChinaEuropePUE across CIS
🇷🇺 PUE — Rules for Electrical Installations (7th ed.)🕰️ PUE-6 — Rules for Electrical Installations (6th ed., 1985)🇺🇸 NEC — National Electrical Code (NFPA 70)🇪🇺 IEC 60364 / HD 60364 (EU national codes)🌎 NOM-001-SEDE, NBR 5410, AEA 90364, RETIE, NCh 4, CNE🇨🇳 GB 50054, GB 50303, JGJ 16, GB/T 16895 (IEC 60364)🇮🇳 IS 732

Key differences

ParameterSide 1Side 2
Напряжение220/380 В, 50 Гц120/240 В, 60 Гц
РозеткиGB 1002 (3 плоских штыря)NEMA 5-15R
УЗО30 мА (JGJ 16)GFCI 4–6 мА + AFCI
ОбеспечениеНациональные GB + IEC (GB/T 16895)NFPA 70 (собственный)
ПроверкиПриёмка с обязательными статьямиИнспекция код-офицером при монтаже
Противопожарное УЗО≤ 500 мАGFPE 100 мА (>1000 А)
Сечения1,5/2,5 мм²14/12 AWG

Two systems

China: GB + adoption of IEC (GB/T 16895). US: independent NFPA 70.

Voltage and sockets

220/380 V 50 Hz GB 1002 vs 120/240 V 60 Hz NEMA.

Protection

30 mA RCDs in panels (China) vs GFCI 4–6 mA in receptacles + AFCI (US).

Enforcement

Mandatory clauses + design review (China) vs code-officer inspections (US).

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Data is for reference. Final design decisions must follow current regulations and a qualified engineer.
All comparisons · World electrical installation rules