Determining power usage and current draw of networking equipment
Determining power usage and current draw of networking equipment
I was planning to start with Google WiFi and power line Ethernet for connecting my parents’ devices. But soon two issues stood out. First, their home security system operates on its own network, which interferes with the rest of the WiFi in the house—so mesh networking isn’t an option. Second, the electrical supply inside their home is outdated and unsuitable for reliable powerline Ethernet. That led me to explore Ubiquiti’s networking equipment, especially their Unifi line of products. I needed a solution that could cover three distinct areas of the house with multiple access points, including one in the back bedroom with an Ethernet passthrough for a desktop. After considering options, I thought a full Unifi setup with a switch, router, and access points would work best. However, I’m concerned about powering it all efficiently. I’m not very experienced, but I’m trying to improve. My current plan includes the 24-port Unifi Switch (non-PoE), a PoE injector for the desktop, four 48V .5A injectors, a case with fans, and a surge protector. I’m still figuring out how to connect everything safely and ensuring the power supply meets their needs. I’m hoping this guide helps me understand the reasoning behind my choices. Thank you!
I use a lot more equipment than that, which could generate around 500 watts. You'd likely notice a maximum of 4 to 5 amps across the setup, but unless you push all ports to full capacity, you probably won't exceed 2 to 3 amps, with a power draw of about 200 watts.
The AP will contain a PoE injector as per the standard (unless noted otherwise, such as 5 pack)
Thanks for the feedback. You're considering PoE injectors, possibly a 5-pack and a PoE switch due to recent price increases.