Hello, I am designing recessed LED strip Lighting for the ceiling of a house.
Plan:
3 lanes 4 feet a part of 15 ft long strips.
Each lane will be powered at each end.
Material:
Channeling interior 20mm wide
LED
three row SMD 2835 360LED 16mm wide
80w/5m
Power supply
2 - 12V 30A DC Power Supply Driver,360W
1 Smart switch 10A
3x 15' LED strips, rated at 80W per 5m. For simplicity, we'll assume...
- Each 15' segment is 5 meters
- The power figure per segment is the sum total of power needed for the LEDs and any current-limiting circuits onboard
- Your switch's current limit is independent of the voltage and it can switch AC or DC loads
Thus 15 meters / 5 meters = 3 segments x 80W per segment = 240W / 12V = 20A / 3 = ~6.67A per 5m strip. If you're further powering each end then the maximum current delivered per
half-segment will be ~3.33A; this may be relevant since LED strips often have maximum lengths due to current limits. In reality 15 feet is about 10% less than 5 meters so your actual currents should be slightly less.
If the switch is on the
AC side between mains power and the power supply, 10A is sufficient
(240W / 120V = 2A; 240W / 240V = 1A). If it is on the
DC side between the power supply and the LED strips then it is not and I see three scenarios for controlling the strips:
- Use two switches, each controlling three half segments
- Use 3 switches, each controlling one full segment
- Use one switch controlling a 20A rated relay
However I imagine that the switch is rated for - and possibly
only works with -
AC loads.
Questions
1) Would this supply a 16' by 20' room with enough light?
2) Is the power and configuration of power supplies correct?
3) Kind of a dumb question, the Smart switch is 10A, the power supplies are running 30A. Is that a problem?
Thank you for your help and time.
1. I don't know what sort of lighting you require, however
240 watts of any LED flavor of strip lighting I'm personally aware of will probably make the room
operating theater bright and possibly uncomfortable to be in. If you're diffusing off of a ceiling you'll lose some light in the process, but I would still expect discomfort off of any reasonably reflective ceiling.
2. One power supply should be sufficient.
3. I have addressed this above.
Pictures did not post sorry.
Looks like you tried to copy-paste the image directly into the editor and it encoded as text - which makes quoting your post a challenge. Short of using CPF features to upload images separately (the specifics of which I cannot advise one having never used them), an external image host - such as imgur.com - is required.