Giersch 47-90-20113 cable D4.7x48

An ignition cable of this type connects the ignition transformer to the ignition electrode. It carries the high-voltage pulse that creates the spark at the electrode gap. The cable is silicone-insulated to withstand both the high voltage and the heat near the burner head. Over time, the insulation can harden or crack, which allows the spark to leak to earth. That leakage often mimics a faulty transformer and causes nuisance lockouts. When selecting a replacement, the cable diameter and connector pattern must match the terminal on both the transformer and the electrode. The cable length also needs to be sufficient to reach without tension. Check that the insulation is intact along the whole run and that the terminal boots (if fitted) are not brittle. A damaged cable should never be reused even if it still sparks, because the arc path to ground develops intermittently. This article is listed under the Giersch brand with the manufacturer code 47-90-20113 and catalogue number 507.298.001. It is identified as a cable with a diameter of 4.7 mm and a length of 48 mm (or 48 cm, depending on the sizing convention used by the supplier). Confirm the connector type and overall length from the old part before ordering.