I am working on a WLED project, using a esp32 in a 3d printed enclosere. But my dad says that i can’t install it because it is not UL listed. He is worried if the house burns down, the insurance company won’t insure it due to diy electronics possibly starting a fire. What am i to do, i am not developing a project to sell?
If the house burns down because of that your insurer will likely be difficult about it. You should also check the policy of your insurer, perhaps the cause of the fire is irrelevant.
As for fire safety. I always put my electronics in non flammable environments and make sure that everything is fused with either a current or thermal fuse.
Anything with high current consumption goes inside a metal box so that even if it does catch fire it can’t take anything with it. 3D printed enclosures are fine if you mount those inside a metal bucket for example.