Equipment Nameplate Requirements: What OSHA, NEC, and Your Customers Expect on a Nameplate
A nameplate is the one document guaranteed to still be with the machine in 30 years. Motors from the 1950s are rewound today using nothing but the data on a bronze plate — that is the durability bar a nameplate is expected to meet.
Important Disclaimer
This article is provided for general informational purposes only and does not constitute legal, safety, or professional compliance advice. Regulations, standards, and codes are subject to change and may be interpreted differently by authorities having jurisdiction (AHJ). Always consult with qualified safety professionals, licensed engineers, or legal counsel to determine the specific requirements applicable to your facility. TagBuilder is not responsible for any actions taken based on this information.
What the Rules Require
NEC 110.21(A) requires the manufacturer's name, trademark, or descriptive marking on electrical equipment, and the marking must have durability adequate for the environment. Product standards go further: motors carry the full NEMA MG-1 nameplate data set (HP, voltage, FLA, RPM, frame, service factor), industrial control panels list supply voltage, phase, frequency, and short-circuit current rating, and machinery covered by NFPA 79 carries similar electrical nameplate data at the incoming supply.
The Practical Nameplate Data Set
| Field | Why it matters later |
|---|---|
| Manufacturer + contact | Warranty, parts, and support routing |
| Model & serial number | The key every service record hangs on |
| Electrical ratings | Voltage, phase, FLA, SCCR — what the electrician and inspector read |
| Build date | Warranty start and code-cycle questions |
| Weight / capacity | Rigging and floor-loading decisions |
Materials That Meet the Durability Bar
Engraved plates hold their data because the characters are physically cut, not printed: two-ply plastic for indoor equipment and control panels, and engraved metal for washdown, outdoor, or high-temperature service. Adhesive backing works on clean flat housings; screws or rivets are the safe choice on textured castings and anywhere heat or vibration lives.
For OEMs and Machine Builders
Serialized nameplates are a place small manufacturers quietly lose hours — someone fills a spreadsheet, someone orders, someone matches plates to machines. Ordering engraved plates in serialized batches (same layout, incrementing serial and date fields) turns that into a ten-minute task per production run, and custom engraving is typically far cheaper than branded plates from equipment vendors.
Custom equipment nameplates — your layout, serialized, engraved in plastic or metal.
One-off or prototype? Build it in the tag configurator and see the proof instantly.
Photo credits: "Nameplate, Fireboat Firefighter 600V DC Marine Motors" by Kaylee La Spisa via Wikimedia Commons (CC BY-SA 4.0); "Nameplate of a CT" by SAM31416 via Wikimedia Commons (CC BY-SA 4.0). Product images: TagBuilder.
