How much current can different AWG wire gauges handle? 26 AWG is fairly common in basic electronics, and it is rated for about 2.5 A of current. This means that that you should limit your circuit design to put a maximum of 1 A of current through 26 AWG wire, i.e. at least half the current rating of the wire. And this nicely coincides with the 1 A power consumption limit of the Raspberry Pi Zero computer board.
This also means you should make sure your modular connectors you use are rated for 2 A of current if you are using them for the main power connector to the Raspberry Pi Zero. All other lower power connectors, e.g. for connected peripherals, can go just fine with 1 A modular connectors, i.e. Molex PicoBlade.
20191109/DuckDuckGo 26 awg wire current
20191109/https://www.engineeringtoolbox.com/wire-gauges-d_419.html
Please see my next article on the subject for important further discussion.