Using someone else&#39;s electronics in my project. Who&#39;s liable?
<p>So I'm working on this project, its in a nutshell a usb break out board, a dc to dc converter, and a small LED light strip all three of which are bought off of amazon and are UL certified. The end goal in a sense is to take power from a usb connection, and turn on an LED strip. These 3 components are soldered together with the appropriate gauge of wire and soldered correctly and all components are housed in 3d printed container. Now say I sell this &quot;product&quot; on online, and it (very unlikely) catches fire, who would be held responsible? Would I be responsible since I connected the electronics together appropriately and sold them? Or would the original manufacture be responsible?</p>

<p>Your are liable.</p>
<p>Your product design has a direct impact on the product safety, much more than the individual components. Just to name the most important ones (there are more):</p>
<ul>
<li>Thermal design (the enclosure, convection, how the components are thermally connected)</li>
<li>PCB layout (Are the wire distances sufficient for electrical insulation? Are the wire copper diameters sufficient in terms of Amps per mm2?)</li>
<li>Grounding and insulation done properly</li>
</ul>
<p>Consider the following UL standards which are probably related to your product design, but not to the internal components (probably not the full list):</p>
<ul>
<li>UL 50, Enclosures for Electrical Equipment</li>
<li>UL 796, Printed-Wiring Boards</li>
<li>UL 1598, Luminaires</li>
</ul>

united-states