Insights from the engraving shop
Practical guides on electrical labeling, NEC compliance, materials, and panel identification.
How to Build a Valve Schedule That Passes Closeout (Free Template)
A valve schedule ties every tag in the mechanical room to a line on a chart the owner actually keeps. Here is what goes in each column, how to number valves so additions do not break the system, and a free tool that builds the PDF for you.
ASME A13.1 Pipe and Valve Tag Color Standards: A Contractor Guide
ASME A13.1 sets the color, wording and legibility rules for pipe markers and valve tags. Here is the color chart, how to lay out a valve tag, and how to build a valve schedule that passes closeout.
NEC 110.22 Series Rating and Disconnect Labeling Requirements
NEC 110.22 requires specific labeling on series-rated equipment and disconnects. Here is what the label must say, when it applies, and how it fits with 110.21 and 110.24.
EV Charging Station Labeling Requirements Under NEC 625
NEC Article 625 governs labeling for EV charging equipment, from rated output markings to disconnect labels and load management directories. Here is what installers and panel shops need to get right.
NEC 690 Solar PV Labeling and Rapid Shutdown Requirements
NEC 690 governs solar PV system labeling, from rapid shutdown placards to DC conductor markings. Here is what installers need on the equipment and where inspectors look first.
We Now Print Vinyl Safety Labels: ANSI Z535.4 DANGER and WARNING, No Minimum Order
Panel Label Company now prints 6" x 4" ANSI Z535.4 vinyl safety labels alongside our engraved acrylic line. Premade voltage, machinery and electrical hazard labels, or your own wording, from $4.60 with no minimum order.
What the NEC's Arc Flash Label Changes Mean When Your State Adopts Them
The 2026 NEC drops the 1,000A threshold for detailed arc flash labels, but it only matters once your state or AHJ adopts it. Here is what changed and how to get ahead of it.
Phenolic Labels vs. Engraved Acrylic: Which One Belongs on Your Panel?
Phenolic legend plates vs. engraved acrylic labels: compare cost, chemical resistance, turnaround, and UL 508A compliance to pick the right material for your panel shop.
NEC 2026 Arc Flash Label Requirements: What's Changed and What You Need to Know
A plain-English breakdown of the two-tier NEC 110.16 arc flash label system, what changed in the 2026 cycle, and how to stay compliant on commercial and industrial jobs.
Why Arc Flash Label Material Matters: Industrial Vinyl vs. Standard Stickers
NEC 110.16 and NFPA 70E require arc flash labels to stay legible. Here is why cheap stickers fail in industrial environments and what a properly specified industrial vinyl arc flash label actually delivers.
Arc Flash Labeling for UL 508A Panel Builders
What UL 508A panel builders are responsible for on arc flash labeling, what falls to the end user under NEC 110.16, and how to handle warning labels efficiently at production volume.
How to Read an Arc Flash Label: A Field Guide
Every field on an NFPA 70E §130.5(H) arc flash label explained in plain English - incident energy, working distance, arc flash boundary, PPE category, and what the WARNING vs DANGER header actually means.
Beyond the Amps: The Critical 2026 Fault Current Labeling Guideline
NEC 110.24 requires field marking of available fault current on service equipment. Here is what must appear on the label, when it must be recalculated, and why engraved acrylic is the professional standard.
How to Label an Electrical Panel the Right Way
What the NEC actually requires for panel labeling, how circuit directories are handled in practice, and where engraved labels belong on the equipment itself.
Acrylic vs. Aluminum Panel Labels: What Electricians and Contractors Need to Know
Engraved acrylic or aluminum? A straightforward comparison of the two most common panel label materials, with guidance on when to use each.
What Are Legend Plates and When Do You Need Them?
Legend plates identify pushbuttons, selector switches, and indicator lights on industrial control panels. Here is what they are, when they are required, and how to spec them right.
NEC 110.21 Label Compliance for Electricians
NEC 110.21 governs field-applied electrical labels. Here is what it actually requires, what it does not, and how to make sure your jobs pass inspection every time.
Welcome to the Panel Label Company Blog
News, guides, and field-tested insights on electrical labeling, NEC compliance, legend plates, and panel identification best practices.