On the blow molding floor, the heating tunnel is where you either keep running or start scrambling. When an infrared lamp starts to drift, preforms come up cold, pressure climbs, and suddenly you’re chasing rejects. More often than not, the weak link is the power cable. We built the Infrared Lamp Power Cable 2.5mm to stop that chain reaction before it begins. What matters, technically, is straightforward. The 2.5mm² cross-section carries the steady current short-wave halogen and quartz infrared emitters demand, without voltage drop. That lets the lamp hit set temperature fast and hold it across the heating zone. The jacket is rated for continuous high heat inside the tunnel, and the termination is matched to common lamp connectors, including R7s. Specs matter: 2.5mm² keeps power delivery stable, so the emitter output is consistent, shot after shot. In stretch blow molding—Sidel, Krones, SIPA, Husky, SACMI, Nissei ASB—the preform wall has to hit the right temperature profile before it ever reaches the blow station. With this cable, the lamp stays at temperature, so you cut warm-up drift and limit overshoot. The payoff shows up as fewer thin spots, less neck distortion, and fewer bursts driven by pressure spikes. You also cut downtime because you replace one cable, instead of chasing lamps that keep underperforming. Energy use drops, too, because the emitter isn’t fighting voltage loss. Here’s the thing: confirm the connector type and polarity before ordering. Mismatched terminations are the most common field mistake. Route the cable away from moving clamps, and keep it out of the cooling airflow so the terminals don’t get hammered by thermal cycling. Expect shorter life if the cable is repeatedly bent near the lamp base, or if the lamp is run above its rated voltage. Match the cable to the emitter, and the heating profile stays repeatable—shift after shift.