Greg:
As I do not have all the catalogs I used to have in my home office, and this is 'bugging' me, I found this limited info today.
https://unvlt.com/pdf/literature/navigator/pdfs/BNC_Sect_4_HID.pdfHopefully this paste job comes up as a link to ballast info.
The good info is on page 4-17, 'input watts'!