What secondary voltage is required for an oil burner transformer ignition system?

Oil burner ignition transformers typically produce secondary voltages in the range of 8,000 to 12,000 volts AC. This high voltage is necessary to generate a strong, consistent spark across the burner electrodes. The exact voltage requirement depends on burner design, electrode spacing, and combustion chamber conditions. Adequate voltage ensures reliable ignition even under cold start conditions or minor fuel and airflow variations.