Is It Safe to Use Household Outlets for USB Device Power?
Asked by SunnyTechNinja92
Hey folks! I'm working on setting up some automation sensors in my home, each requiring 5V at 2A. I'm considering running long USB cables through my attic, but that seems a bit impractical. Can I safely connect USB adapters to standard wall outlets, run the wires inside the walls, and bring them out near the ceiling? Is this compliant with building codes? If it's feasible, what would be the best way to go about this? I'm aiming to keep everything hidden, so visible cables are a no-go. Thanks for your input!
Answers
I suggest installing some old-work boxes for any new outlets you need. Ideally, place them in the same stud bay as an existing lower outlet. You can run Romex from that outlet up to your new one and then just install an outlet with built-in USB ports. This way, everything stays neat and tucked away!
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Just a heads up, running long 5V cables isn't ideal. Low voltage DC power doesn't travel well over distances. You should avoid anything longer than 10-15 feet unless you're okay with adding power injection to maintain enough current. Using cord covers could also help conceal any visible wires!
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If you're considering going all out, think about running CAT6 cable instead, especially if you're planning to install cameras later. A PoE (Power over Ethernet) switch can be used to power devices through the network cable, and there are PoE splitters that give you powered USB connections. It might be overkill for now, but it could save you time and effort down the line!
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