I am trying to calculate the current draw for 6 florescent bulbs and ballasts. There is one ballast per 36W bulb.
I know that the current draw for each bulb would be 36/240 =0.15A (0.6A total)
How do I calculate the current that the ballast draws from the mains supply.
There is a label on the ballast which states the line current is 1.3A for 120V or 0.56A for 277V. And it has a 96% Power factor.