I have a recessed light (75w) in one corner of my room (on 15 amps breaker) and I am thinking of the extending the input to this light circuitry to fill the room with 9 more bulbs.

I plan to arrange the lights in 3x3 form with 3 lights in series (of 3 sets).

Is this safe (fire hazards)? Does this violate any codes? Is the power enough? Do the lights glow with same intensity?


Incandescent lightbulbs won't work very well when conected in series using normal mains voltages. At best they will illuminate dimly.

If your current single 75w lightbulb is on a dedicated 15A circuit, that would be surprising. Perhaps it shares a circuit with one or more wall sockets.

For safe/reliable operation you have to be sure that the total load on that circuit does not exceed 15A. So you need to sum the currents that are likely to be concurrently drawn by each of the parallel loads.

You must also connect your new light-fittings using wire of the construction and gauge specified by local codes (you didnt say if you live in Dhaka, Melbourne or Aberdeen). Connection methods and enclosures (junction boxes) also vary by region.

Using LED lightbulbs will enable you to provide your desired higher light output (lumens) without increasing the power used (watts) or, equivalently, current drawn (amps).

Unless you are happy to spend enough time to learn all this, you might be better off hiring an electrician, it might not be expensive if you do the decorative work, making holes for fittings and cable runs, making good and repainting.

  • You are right, there are other power outlets in the room. I don't know if they are connected in series or parallel. I was hoping using a 15w equivalent LED lights would help compensate for any losses. – tvr Dec 27 '14 at 18:54
  • 2
    @tvr - in standard mains-voltage house wiring, loads are never connected in series. The only exception I can think of is Christmas-lights-type light strings. All normal lights are connected in parallel. – DoxyLover Dec 27 '14 at 19:15

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