Eight Foot Long Fluorescent Fitting. Calling All Old Sparks.

mapj1:

Have you got that the right way round ? I  thought the 125s in the 40mm diameter were being phased out in favour of the thinner ones at 100W

125 phased out

   100  pricey


I'd expect either to be tricky to get on  delivery and to cost more than a new fitting to be honest - how old is it and what sort of ballast?


Either will light in the other fittings, but may be a bit slow on the striking, i suspect it voids the warranty, but my experience is that it that the lamp life is not much affected. Far more important to lamp life is electronic vs traditional ballast.

According to the data-sheets, the running voltages are similar.


Edit if trying to get near obsolete tubes from afar, beware of tubes made for the US market with a much lower striking voltage.

Mike.

Details. Old existing 8 ft. twin switch start fitting. Existing tubes 100W rated worn out. New fat tubes available from old stock are 125 W.


Z.

mapj1:

Have you got that the right way round ? I  thought the 125s in the 40mm diameter were being phased out in favour of the thinner ones at 100W

125 phased out

   100  pricey


I'd expect either to be tricky to get on  delivery and to cost more than a new fitting to be honest - how old is it and what sort of ballast?


Either will light in the other fittings, but may be a bit slow on the striking, i suspect it voids the warranty, but my experience is that it that the lamp life is not much affected. Far more important to lamp life is electronic vs traditional ballast.

According to the data-sheets, the running voltages are similar.


Edit if trying to get near obsolete tubes from afar, beware of tubes made for the US market with a much lower striking voltage.

Mike.

Details. Old existing 8 ft. twin switch start fitting. Existing tubes 100W rated worn out. New fat tubes available from old stock are 125 W.


Z.