Possible alternative powering method?

[kyphos]

You’re asking for problems if you run 5VDC over long distance. The current draw will vary depending on camera state (night mode on/off, panning motors on/off, WiFi streaming or not, etc).

You’d do better to put a 12VDC supply in the basement, and use DC-to-DC converter (such as a dashcam power kit) to down-convert to 5VDC at the camera(s). That approach also solves your wiring problem, as the dashcam kits have an integrated microUSB plug.

5v Power Distribution

A much better architecture is to run higher-voltage (say 12, or 16, or 24VDC) over the long cable runs, then down-convert to 5VDC at/near the camera. This approach allows use of smaller wire, will incur less voltage drop (since the current is lower), and reduces the potential for EMI pickup on the long cables. If you search this forum, you’ll find numerous articles on using dashcam power kits (and other methods) to down-convert to 5VDC.