Solid Wire — Strength, Durability, Performance
Solid wire, also known as rigid or dry wire, is one of the most widely used electrical wires in construction projects, electrical panels, and various industries.
Solid Wire
Solid electrical wire is a single-core conductor, typically made of copper or aluminum and insulated with PVC.
Compared to flexible (stranded) wire, it has lower flexibility; however, due to higher mechanical strength, lower voltage drop over long distances, and longer service life, it is the best choice for fixed and long routes.
Solid wire is widely used in building wiring, installation inside conduits and under plaster, electrical panels, and lighting systems.
Based on rated voltage, these wires are classified into 300/500 V and 450/750 V, and are manufactured in accordance with IEC 60228 and ISIRI 3084 standards.
Key Features of Solid Wire
⚡ High mechanical strength and long service life
⚡ Lower voltage drop over long distances
⚡ Excellent conductivity (in copper models)
⚡ Available in various steel grades (SAE 1006, SAE 1008, etc.)
⚡ PVC insulation resistant to heat and moisture
⚡ Cost-effective compared to some flexible cables
Types of Solid Wire
- Black Annealed Wire
Made of soft steel, drawn from steel rod and annealed → used in rebar tying, formwork, and carpentry. - Brass Wire
Made of copper-zinc alloy → golden color, corrosion-resistant, used in jewelry, crafts, and fine industries. - Galvanized Wire
Black wire coated with zinc (Zn) → rust and corrosion resistant, used for fencing, barbed wire, and wire mesh. - Stainless Steel Wire
Highly resistant to oxidation and moisture, non-magnetic → used in advanced industries and special equipment.
Thin → handicrafts, embroidery, jewelry, arts & crafts
Thick → heavy industries, fencing, mesh, packaging
سیاه
برنجی
Galvanized
Stainless Steel
Types of Solid Wire
When purchasing solid wire, pay attention to the conductor material, insulation type, standard class, rated voltage, and manufacturer’s reputation.
Using non-standard and unbranded products can compromise project safety.
Rated Voltage
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300/500 V → Suitable for residential wiring and lighting
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450/750 V → Suitable for electrical panels and light industrial equipment
ISIRI Code
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For cross-sections 0.5, 0.75, and 1 mm² (Low Voltage)
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For cross-sections above 1 mm² (Higher Voltage)
Conductor Material
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Copper (Best electrical conductivity)
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Aluminum (Lighter and more cost-effective)
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Steel (Low-carbon, galvanized, or stainless steel)
Standards
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IEC 60228
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ISIRI 3084
Abbreviated name
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NYA
FAQ
1. What is the difference between flexible wire and solid wire?
Solid wire is single-core and rigid, used for fixed routes. Flexible wire is multi-stranded and bendable, suitable for complex routing.
2. Does solid wire always have insulation?
No. Solid wire can be supplied bare (uninsulated) or with PVC insulation.
3. What is the best type of solid wire for humid environments?
Galvanized or stainless steel solid wire, due to their resistance to rust and corrosion.