Lew Electric SWB-4 Write-on Wire Marker Book

Product Description

The LEW ELECTRIC SWB-4 is a write-on wire marker book designed for labeling conductors, cables, and terminals in electrical installations. Each book contains pre-printed marker tabs that technicians write on directly, providing a fast and legible way to identify wiring in panels, junction boxes, and control enclosures. The book format keeps markers organized and ready for use on the job. At 0.6 pounds and measuring 10 inches long by 6 inches wide by 1.5 inches tall, it is compact enough to carry in a tool bag or store in a service van.

Wire marker books are a standard consumable for licensed electricians performing new construction, service upgrades, panel work, and low-voltage control wiring. The write-on format is well suited for custom labeling situations where pre-printed alphanumeric sequences do not match the circuit layout. This marker book is appropriate for both residential and light commercial electrical work wherever clear conductor identification is required by code or good practice.

Key Features

• Write-on marker tabs allow custom labeling of conductors and terminals
• Book format keeps markers organized and prevents loss on the job site
• Compact dimensions fit easily in a tool bag or service kit
• Lightweight at 0.6 pounds for easy transport
• Suitable for panel wiring, junction boxes, and control enclosures

Compatibility

Designed as a general-purpose write-on wire marker solution compatible with standard conductor and cable labeling applications in residential and commercial electrical installations.

Installation Notes

Wire markers are applied by electricians during rough-in, trim-out, or service work. Always de-energize circuits and follow NFPA 70 (NEC) lockout/tagout procedures before working inside panels or enclosures. Apply markers to clean, dry conductors for best adhesion and legibility. Verify marker placement matches the circuit directory or as-built documentation before closing up the enclosure.

Technical Specifications

• Dimensions (L x W x H): 10 inches x 6 inches x 1.5 inches
• Weight: 0.6 pounds
• UPC: 05400749907

Standard Information

• Brand: LEW ELECTRIC
• Manufacturer Part Number: SWB-4