How many 240 volt fluorescent (2 X 4 recessed, 4 tubes) fixtures can I connect to a 30 amp breaker using 4 mmsq cable?

  • 2
    What is the wattage of these lamps?
    – Niall C.
    Oct 18, 2014 at 0:42
  • What country are you in? Oct 18, 2014 at 3:14

1 Answer 1


Sounds like europe? Total Wattage divided by voltage = Amps or Volts x Amps = Watts. so 240V x 30A= 7200W. I would personally not hit that 7200 total watts and have the circuit totally loaded. so the wattage of the lamps is the determining factor as Niall said.

  • fluorescent are more power hungry on startup so add a good safety margin to that Jul 17, 2015 at 12:02

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