3M 7000031502 Wire Marker Write-on Dispenser

Product Description

The 3M 7000031502 is a write-on wire marker dispenser designed for labeling conductors and cables in electrical installations. The dispenser includes a roll of 70 self-laminating labels and an SMP marking pen, giving electricians everything needed to mark wire in a single kit. Each marker measures 1 inch by 5 inches with a write-on area of 1 inch by 0.75 inches. The label wraps around the conductor and protects handwritten markings against abrasion and environmental exposure. This is a larger-format dispenser suited for heavier cable runs where a standard small-format label would not wrap cleanly or lay flat.

This dispenser is used in commercial and industrial electrical work where field identification of wire and cable is required. It is appropriate for panel terminations, junction box wiring, conduit runs, and equipment connections. The recommended application range covers wire with an outer diameter of 0.23 inches to 1.32 inches, accommodating a wide range of conductor sizes commonly found in low-voltage control wiring through medium-gauge power conductors. Electricians and instrumentation technicians typically reach for this product during rough-in, termination, and commissioning phases of a project.

Key Features

• Includes 70 write-on labels per roll plus an SMP marking pen in a single dispenser
• Write-on area of 1 inch by 0.75 inches provides adequate space for circuit identification text
• Full marker size of 1 inch by 5 inches wraps around conductor and self-laminates over the written area
• Rated for wire outer diameters from 0.23 inches to 1.32 inches
• Larger dispenser format suited for heavier cable and conduit identification tasks

Compatibility

Designed for use on insulated wire and cable with an outer diameter of 0.23 inches to 1.32 inches, covering a broad range of conductor sizes used in commercial and industrial electrical applications.

Installation Notes

Wire markers should be applied by a qualified electrician in accordance with NEC labeling and identification requirements for the applicable installation. Clean the wire jacket surface before applying the label to ensure proper adhesion and legibility. Allow marking pen ink to dry fully before wrapping the laminate portion of the label over the written area. Do not apply labels to energized conductors.

Technical Specifications

• Write-On Area: 1 inch by 0.75 inches
• Marker Size: 1 inch by 5 inches
• Wire OD Range: 0.23 to 1.32 inches
• Labels per Roll: 70
• Weight: 0.35 pounds
• Minimum Order Quantity: 10
• UPC: 00054007121770

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031502