The mandatory colors for power wiring in the National Electrical Code (NEC) are Green, Bare, or Green/Yellow (a yellow stripe or band on green) for the protective ground (PG), and White (or alternatively Gray) for the neutral wire. These are some beginner-friendly safety tips that you should remember before you touch any wire: ● Power Off All the Time: Switch off the breaker whenever working on any wires. It is the initial and the most significant step ● Test Before You Touch: A multimeter or a voltage tester can be used to. This tutorial will discuss the wiring color codes for AC (single-phase and three-phase) and DC power systems based on the NEC and IEC standards. Many countries, including the UK (BS-7671), China, Russia, Hong Kong, Singapore, Ukraine, Belarus, Kazakhstan, Turkey, Israel, South Africa, Argentina. Most European countries, including the UK, follow the IEC (International Electrotechnical Commission) wiring color standard. This guide covers European wire color codes for both AC (Alternating Current — mains and wall outlet power) and DC (Direct Current — batteries and electronics) supply wiring. Household electrical wiring relies on three conductors to safely deliver power: the hot, the neutral, and the ground. Understanding the distinct role and proper identification of each wire is fundamental for any home improvement project involving electricity. Essentially, it acts as a safety mechanism, helping prevent electrical shocks and protecting equipment from damage due to excess current. The primary functions of ground wires. Electrical wiring color codes are a standardized system that tells electricians—and you—the specific job of every wire in the circuit.