PVC Compound Type D
About PVC Compound Type D Color Variant
PVC Compound Type D is a high-performance thermoplastic material designed for electrical applications requiring excellent insulation properties, durability, and flame resistance. Known for its enhanced dielectric strength and flexibility, Type D PVC compound is widely used in the insulation and sheathing of electric wires and cables. This compound is engineered to meet rigorous safety standards, making it ideal for residential, commercial, and industrial wiring systems. Available in various colors for easy circuit identification, PVC Compound Type D ensures both efficiency and safety in electrical installations.
Color Variants and Typical Use
Technical Of PVC COMPOUND TYPE D based on color red
Typical Use
1. Phase A in 3-phase systems (IEC/European)
2. Secondary hot wire in 220V circuits (US)
3. Switched legs in lighting circuits (US)
Standardization:
1. IEC 60446 (Old EU) / IEC 60445
2. NEC (US): Optional/secondary hot conductor
Voltage Level
Low/medium voltage
Technical Of PVC COMPOUND TYPE D based on color yellow
Typical Use
1. Phase B in 3-phase systems
2. Control circuits in industrial panels
3. Interlocked wiring in systems (per NEC/IEC)
Standardization:
1. IEC: L2 (Phase B)
2. NEC: Ungrounded conductors (up to 600V)
Voltage Level
120V–480V typical in industrial
Technical Of PVC COMPOUND TYPE D based on color blue
Typical Use
1. Phase C (IEC) in 3-phase systems
2. Neutral in IEC/UK systems (as per IEC 60446:2007)
3. Low-voltage control wiring (US: <50V>
Standardization:
1. IEC: Neutral (Europe), L3 (old color code)
2. NEC: May be used for traveler wires in switches
Notes
In the US, blue is often used in control circuits and travelersl
Technical Of PVC COMPOUND TYPE D based on color black
Typical Use
1. Hot wire in single-phase systems (US)
2. Phase A in some 3-phase systems (US/Canada)
3. Neutral in UK (old code, now obsolete)
Standardization:
1. NEC (US): Hot/live conductor
2. IEC (Old UK): Neutral (obsolete)
Voltage Level
120V/240V/480V
Technical Of PVC COMPOUND TYPE D based on color green
Typical Use
Earth/Ground conductor
Standardization:
1. NEC: Grounding conductor
2. IEC 60446: Green/yellow stripe is mandatory for protective earth (PE)
Voltage Level
No voltage (safety ground)
Technical Of PVC COMPOUND TYPE D based on color white
Typical Use
1. tral wire (IEC standard alternative to blue)
2. Control wiring in panels
Standardization:
1. IEC 60445: Acceptable for neutral
2. Common in European industrial installations
Notes
Avoid confusion with phase wires – often used when multiple neutrals are needed
Technical Of PVC COMPOUND TYPE D based on color grey
Typical Use
1. Neutral wire (IEC standard alternative to blue)
2. Control wiring in panels
Standardization:
1. IEC 60445: Acceptable for neutral
2. Common in European industrial installations
Voltage Level
120V–240V (residential), 277V (commercial lighting)
Technical Of PVC COMPOUND TYPE D based on color Brown
Typical Use
1. Phase/live conductor in single-phase IEC systems
2. L1 in 3-phase (IEC color code)
Standardization:
1. IEC: Primary hot conductors
Voltage Level
230V (standard EU/UK single phase)
Technical Of PVC COMPOUND TYPE D based on color orange
Typical Use
1. High-voltage wiring
2. Interlock or “always hot” circuits
3. Delta system high leg (US, center-tapped delta – 208V to neutral)
Standardization:
1. NEC: High leg of delta (must be orange)
2. Also used to indicate uninterruptible power sources
Voltage Level
Critical color for high leg delta in commercial panels (center leg)
Technical Of PVC COMPOUND TYPE D based on color purple
Typical Use
1. Custom circuits / signal wires / switched lines
2. Intercoms, alarms, automation systems
3. Low-voltage (typically <50V>
Standardization:
1. No universal standard – custom or internal designation
Voltage level
1. Often used where no confusion with power circuits is allowed
2. Also used in DDC (Direct Digital Control) systems in HVAC