I have a 27inch retina imac I usually work off of. In the event I don't have a power block is it ok to charge the macbook off of the imac using a usb c to usb a cable or is this not suggested. Had anyone tried this before?
USB-C has some strong logic built in to protect your devices. As long as you're using one of the officially approved USB-C cables, don't see any reason you couldn't use a USB-C to USB-A cable for pretty much anything.