1. The Three Label Types (Warning / Circuit / Nameplate)
| Type | Contents | Code |
|---|---|---|
| Warning sign | Danger: Electric Shock / Live Voltage | GB 2894 yellow triangle with black border |
| Circuit label | Circuit number + destination + setting | Beside each circuit breaker |
| Nameplate | Model / manufacturer / voltage / current | Inside or outside the door |
2. Warning Sign Requirements (GB 2894)
GB 2894The standard requires a distribution box to carry: (1) a "Danger: Electric Shock" yellow triangle sign with black border; (2) a text notice reading "Danger: Live Voltage — Keep Away." Mount both in a visible position on the door, minimum 80mm.
3. How to Apply Circuit Labels (3 Elements)
- Circuit number: 1L1, 2L2… (circuit + phase sequence)
- Destination: state which equipment or area the circuit feeds
- Setting value: breaker setting current, e.g. C32 / 40A
4. What Must Appear on the Nameplate? (8 items)
① Manufacturer name/trademark; ② Product model; ③ Rated voltage; ④ Rated current; ⑤ Rated frequency; ⑥ Ingress protection (IP) rating; ⑦ Factory serial number; ⑧ Date of manufacture.All 8 items required — no exceptions.
5. Consequences of Missing Markings (fails acceptance)
Missing markings → the cabinet is rejected at acceptance, and during operation maintenance personnel cannot identify circuits, creating a high risk of electric shock. GB/T 7251.1 requires all markings to be complete at shipment, and at Golden Unicorn a dedicated person verifies every cabinet before it leaves the factory.
FAQ FAQ
Must the nameplate be attached?
Yes, it is required. GB 2894 and GB/T 7251.1 make it mandatory; without it, the cabinet fails acceptance.
Can I write the circuit labels myself?
Yes, but they must be printed with aproper label printer; handwritten labels are non-compliant and fall off easily.
Are there material requirements for the nameplate?
Metal nameplate (aluminum/stainless steel) or weather-resistant adhesive label; outdoor units must be UV-resistant.
What if a marking is damaged?
Replace it immediately — never let a cabinet door run blank.
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