The section of resistance wire that runs (floats) between the coil and the pos. or neg. contact (screw) is the leg (properly, I guess, called a "lead"). Hot leg is where that part of the wire is glowing. When we see glowing wire under wet (wikicoil is wet with e-
juice) conditions it will impart a bad flavor (burnt, metallic) to our
vape. With Genisis style setups, people often have problems with glowing leads between wick and contact (terminal) because it takes some finesse and practice to find the right amount of tension with which to wrap the coil on the wick.