A sensor that I somehow missed ... Isolation, according to the data sheet, is 4kV. Aside from the hole for the current-under-test, the 19.9 x 19.4 x 8mm device only has three pins: oV, +Vcc and output ...

Growing a mixed “lawn” of two kinds of nanowires can make a new kind of light-sensing array that could be made in metre-scale sheets ... technology. Current sensors, such as those found ...