I have built a tree shaped wire framed sculpture with LED lighting. The LEDs each have a positive supply to the anode via an insulated wire and resistor, and the cathodes are connected directly to the metal frame of the sculpture.
I have powered my sculpture basically using an old laptop power supply, DC+ connected to the supply leads and DC- connected directly to the exposed metal frame.
This is fine for me but I now want to make a few more similar sculptures to sell. I'm planning to find some suitable power bricks with 5V output and suitable current rating (no more than a couple of amps)
My question is: is this configuration safe in the event of a power supply fault, and can I sell a sculpture built with such an electrical configuration?