Coal or Hard Rock: Does It Matter Which Cap Lamp You Buy?
A lot of people shopping for a cap lamp go straight to the brightness figure. That makes sense, because it's the number that stands out. But if you work in an underground coal mine, there's a question that comes before brightness: is this lamp certified for where I'm going to use it?
The short version
- ✓Underground coal: certification comes first. Look at the ATEX M1 Wisdom 6A.
- ✓Hard rock, metalliferous and tunnelling: most people choose the brighter Wisdom 4A.
- ✓Always check your site's approved equipment list before buying.
Why coal is different
Underground coal mines can have methane and coal dust in the air. That's why equipment taken into those areas has to be certified as safe for that kind of atmosphere, and why sites are strict about what you can bring underground. A lamp that's fine in a metalliferous mine or a tunnelling job might not be allowed in a coal mine at all.
Under the ATEX system, equipment for mines is classed as Group I. Category M1 is the highest level, meaning the equipment can stay in use even with an explosive atmosphere present. Equipment for other hazardous areas, like gas or dust zones on the surface, is Group II.
How the Wisdom range compares
| Lamp | Brightness | Range | Certification | Best suited to |
|---|---|---|---|---|
| Wisdom 6A | 11,000 lux | 220 m | ATEX M1 (incl. coal) | Underground coal |
| Wisdom 3A | 12,000 lux | 220 m | ATEX Group 2 | Hazardous surface areas, lighter duty |
| Wisdom 4A | 25,000 lux | 316 m | Check with us | Hard rock, tunnelling, industrial |
| Wisdom KL8M | Corded | — | ATEX, explosion-proof | Site-wide fleets (bulk) |
Wisdom 6A Cordless Cap Lamp
- ATEX M1 certified for mining, including coal
- Up to 11,000 lux, 220 m range
- Panasonic 7.0Ah battery, up to 60 hrs on low
$265 incl. free shipping
View product →So which one should you buy?
- ✓Underground coal: check what your site requires first, then look at the 6A. Your site's electrical engineer or safety team will have a list of approved equipment.
- ✓Hard rock, metalliferous or tunnelling: the 4A is the one most people go with. It's bright, it lasts a shift, and it's good value.
- ✓Not sure: ask your supervisor what the site allows. A brighter lamp that gets knocked back at the portal is no use to anyone.
Wisdom 4A Cordless Cap Lamp
- Our brightest cordless lamp: up to 25,000 lux
- 316 m beam, built-in power bank
- Most popular for hard rock and tunnelling
$220 incl. free shipping
View product →Need certification paperwork?
If your site asks for specific certification documents, get in touch and we'll help you check a lamp meets them before you order.
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