What specifications define a transformer for a Beckett oil burner?

A Beckett compatible ignition transformer is defined by primary voltage and frequency, mounting footprint, terminal layout, duty rating, and secondary output. Many Beckett systems use 120 V primary and a high voltage secondary commonly in the 8 kV to 12 kV range with appropriate current to sustain a spark. The transformer must match the burner’s control strategy, whether intermittent or continuous ignition, and fit physically in the burner housing. Use manufacturer recommended part numbers to ensure correct wiring, grounding, and safety approvals.