| Hi, one electrician told me that wiring a fluorescent tube designed for 240 volts by two lines each is 120 V is wrong because it was designed to be fed by a 220v through the ballast and not 120 V and the other side connected to the tube directly being 0 and not 120 V. Is it true? |
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fluorescent tube 240 Volts
- Thread starter skyline77
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electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
- Occupation
- Electrician
I think perhaps you are referring to ballasts that have a black and white line wire but say 100-277 volts and if those can be fed with two ungrounded conductors at 240 volts? There has been some past discussions on that, I don't remember if there was a consensus on if it is technically allowed, but I don't recall anyone ever having problems.
Hi,
one electrician told me that wiring a fluorescent tube designed for 240 volts by two lines each is 120 V is wrong because it was designed to be fed by a 220v through the ballast and not 120 V and the other side connected to the tube directly being 0 and not 120 V.
Is it true?
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
I wonder if it is the old style disconnect lamp holders he is talking about? Line voltage goes to the lamp holders on one end, ballast feed comes out of the same socket, but only if the lamp is installed, ballast wires at the other end. Usually only 120 or 277, unless this is overseas.
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