What happens if you wire a LED light backwards?
LEDs, being diodes, will only allow current to flow in one direction. And when there’s no current-flow, there’s no light. Luckily, this also means that you can’t break an LED by plugging it in backwards. … A reversed LED can keep an entire circuit from operating properly by blocking current flow.
Does polarity matter on a light bulb?
Light Bulbs – With some appliances, polarity doesn’t matter. … However, with lamps, polarity is important. When you screw a light bulb into a socket, the electricity is intended to flow into the light bulb from the button on the bottom of the socket. Its the black or hot connection.
Will reverse polarity damage LED strip?
Also keep in mind, polarity matters on LEDs – if you hook the wires to the strip backwards, it will refuse to light. Won’t do it any damage, just reverse polarity and it should light.