18 AWG Stranded Tinned Copper Electrical Wire (MTW), 600V ,500 feet Length, Blue Color | Asharqiyah Cables

Technical Breakdown: What Defines 18 AWG Wire?

18 AWG wire is defined as a copper conductor with a diameter of approximately 1.02 millimeters and a cross-sectional area of 0.82 square millimeters, designed for low-voltage internal wiring.

The specific 18 AWG MTW wire from Asharqiyah Cables uses 16 tinned copper strands. This stranded construction allows the wire to bend without breaking, unlike solid wire which snaps easily during tight turns in machinery. The insulation thickness is a precise 0.76 millimeters, creating a total outer diameter of 2.85 millimeters.

Current Capacity and Safety Limits

Maximum current ratings for 18 AWG wire depend on the installation method and ambient temperature. In dry locations under normal Saudi heat conditions, you can safely draw up to 7 amperes. However, if the wire is bundled or located in wet environments, the rating drops to 5 amperes to prevent overheating.

Our blue PVC insulation (PVC 90°C) handles high heat resistance, making it suitable for internal wiring in control panels where machinery generates significant friction and heat. It is rated for 600 Volts AC or 750 Volts DC, ensuring safety in standard industrial equipment.

Stranded vs. Solid: Why Choose Stranded?

Most 18 AWG applications require stranded wire rather than solid wire. Stranded wire consists of multiple thin copper strands twisted together. This design offers flexibility, allowing the cable to withstand repeated bending in moving parts of machinery. Solid 18 AWG wire is rigid and prone to breaking at connection points, making it unsuitable for dynamic industrial environments.

Common Applications in Saudi Industries

Construction sites and factories in Riyadh and Jeddah often use this wire for instrument loops, thermocouple extensions, and sensor connections. The tinned copper coating provides superior corrosion resistance against the region's humidity and sandstorms. It is the standard choice for wiring inside electrical boxes, switchboards, and automated control systems where space is tight and movement is frequent.

Buying Guide: Sizing and Length

When purchasing 18 AWG wire, verify the voltage rating matches your equipment. Our standard spool length is 500 feet, providing enough material for medium-sized projects. If you need shorter runs, request a cut-to-length service. Always check the color code; blue insulation typically indicates a ground or common terminal, though availability varies by manufacturer specification.