Century extension cords power equipment for building contractors. Pro Lock helps keep plugs together, Pro Star shows power, and Pro Glo shows power and ground continuity. Choose by the connection problem you’re trying to solve.
Century Wire & Cable manufactures electrical cords and cables. Heavy-duty extension cords for professional building contractors are a main part of its business. Its brands include Pro Lock, Pro Star and Pro Glo.
Power and ground indication
Pro Star’s molded Power Check lighted ends indicate power through the cord. That’s the straightforward choice when power indication is the feature you need.
For a visible ground check too, Pro Glo and Pro Lock have green CGM lights that indicate circuit ground continuity. Their amber plug lights indicate power. Each light has a specific job: amber for power, green for ground continuity.
Keeping the connection together
Pro Lock addresses accidental unplugging with a female connector that locks automatically when you push the plug in. That helps prevent a separated connection from interrupting the work. To disconnect it, pull down the connector collar.
The Pro Lock connector accepts a standard 15A, 125V, three-conductor male extension-cord plug. Match the equipment connection and electrical requirements before choosing the cord. For roof-seaming machines, Century’s roofing cords use 30A, 250V NEMA L6-30 plugs and connectors.
Gauge, reach and identification
Treat gauge as a model specification. The featured Pro Lock is 12/3 AWG, while the featured Pro Star and Pro Glo are 10/3 AWG. All three models below carry the same electrical rating: 15A, 125V and 1875W.
The Pro Glo family includes 25-foot, 50-foot and 100-foot lengths. Extra length adds resistance, so choose the reach you need and size the cord for the equipment load and run.
Century offers custom printing on the featured Pro Lock, Pro Star and Pro Glo cords. Your company name and telephone number repeat every 12 inches along the cord for identification down the run.
Featured model specifications
These specifications apply to the individual models shown.
| Line | Model | Wire | Electrical rating | Power indication | Ground-continuity indication | Connection retention |
|---|---|---|---|---|---|---|
| Pro Lock | D14412050BL | 12/3 AWG SJTW | 15A / 125V / 1875W | Amber plug light | Green CGM connector light | Automatic locking connector with collar release |
| Pro Star | D11710050GN | 10/3 AWG SJTW | 15A / 125V / 1875W | Power Check lighted ends | ||
| Pro Glo | D17004100 | 10/3 AWG SJTW | 15A / 125V / 1875W | Amber plug light | Green CGM connector light |
Frequently Asked Questions
What’s the difference between Pro Lock, Pro Star and Pro Glo extension cords?
The main difference is the connection and what the lights tell you. Pro Lock locks the plugs together and shows power and ground continuity, Pro Star has lighted ends that show power, and Pro Glo shows power and ground continuity.
Does the green light on a Century extension cord mean it has GFCI protection?
No. The green CGM light indicates ground continuity; it doesn’t establish GFCI protection. A ground-check light and a GFCI do different jobs.
How does a Pro Lock extension cord unlock?
Pull down the collar on the female connector to release the plug. It locks automatically when you push a compatible plug in, so there’s no separate latch to set.
Do Century extension cords stay flexible in cold weather?
The featured Pro Star and Pro Glo cords have cold-weather PVC insulation and jackets with stated working flexibility down to −40°F. The featured Pro Lock has a −58°F cold-weather PVC jacket. Those limits belong to those cords, so the name alone isn’t enough to establish a temperature rating.
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