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Andrew Gabriel June 21st 11 10:04 PM
Running mains fluorescents from inverter
 
In article ,
(Don Klipstein) writes:

I would replace the 5-footers with 4-footers. More 4-footers are made
than all other sizes of fluoros combined. Going with the flow will
greatly improve your ballast choices.

Whilst that is likely in the US (I'm always somewhat surprised to see
large US supermarket lit with rows and rows of 4' T12 tubes), it's not true
here. 4' was a popular size in the home in the 1960's, but in supermarkets
and other similar installations, they tend to be 5', 6' or 8' tubes (8' is
becoming rarer now), but never 4', possibly because of their low loading
compared with the longer tubes.
In offices, you can find 4' tubes in 1200x600mm modular ceiling lights,
but 2' tubes in 600x600mm modular ceiling lights are much more common.
(These are giving way to externally ballasted compact fluorescents now.)

--
Andrew Gabriel
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