Voltage Drop on long runs of LED Christmas Lights?

fixit_fiona

I'm looking to invest in some quality LED Christmas lights for my house and try to hang them in a way that would wrap the entire house and all the roof lines. I think that the total length covered is just under 500' with the peaks and valleys. I'm looking at buying a spool of Christmas Light stringers and LED bulbs similar to the products below. Although it's not mentioned in the specification, the wire is 18awg. Based on my rough math and Ohms...

Originally asked by Matt Murrell on Stack Exchange (diy) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

Causing a fire hazard That is decided by the presence of a non-faked UL Listing (with file number). Listings from other NRTLs such as CSA or ETL are also acceptable. Note that most mail order, everything from Alibaba and AliExpress, and almost anything from eBay or Amazon Marketplace (even if shipped with Prime) is abusing a loophole in Customs/safety regs to sneak in entirely dangerous and defective Cheese junk products. The dead giveaway is the "CE" label they stamp on almost everything, almost always faked; as CE is a voluntary mark only meaningful inside the EU. CCC is another popular fake mark. impacting the life of the bulb It's LED. What will kill the bulb is the driver electronics...

Full answer by Harper - Reinstate Monica: https://diy.stackexchange.com/a/178664 (CC BY-SA 4.0).

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