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The ABB WM-BW12 is a blank write-on marker book designed for labeling terminal blocks, wiring panels, and related electrical components. It provides a straightforward solution for field identification and circuit documentation where pre-printed legends are not practical. Electricians and panel builders use this marker book to create custom labels directly on-site, reducing reliance on pre-ordered printed markers. The book format keeps markers organized and easy to access during installation or service work.
This marker book is suited for residential, commercial, and industrial electrical panel work where custom identification of terminals and wiring points is required. It is commonly used during new panel builds, retrofits, and service upgrades where technicians need flexible, on-the-spot labeling without waiting for printed marker sets.
Designed as an OEM-style accessory for use with standard terminal block marker systems in electrical panel and wiring applications.
Installation of terminal block markers is typically performed by licensed electricians during panel assembly or service. De-energize all circuits before working inside panels or enclosures in accordance with NFPA 70 (NEC) lockout/tagout procedures. Markers should be applied only after all wiring terminations are complete and verified. Use a fine-tip permanent marker for legible, durable labeling.
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