Re: lighting system
This is a magnetic ballast. It is heavy but durable.
Electronic version is lighter and does not need a starter (the round can).
More expensive. Upon startup, electronic ballast does not flicker. There is no humming noise as generated on some magnetic ballasts.
I don't know about others' experience. Personally, I don't find electronic ballast reliable. Broken a few, Philips and China brand. Seems not suitable for environment above 40C.
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