I'm replacing my drop-in electric stove with a free-standing electric stove (both are rangetop + oven). The drop-in stove was hardwired and the wiring comes up out of a hole in the floor about 3" from the wall. The old stove was connected to a junction box with 12 gauge wire in flexible conduit, but the junction box was just floating around on the floor behind the cabinets--it wasn't fastened in place on the floor or to the wall.
Because the new stove requires 10 gauge or larger wiring and the store wasn't open when I needed to install the new stove, I "temporarily" connected the new stove directly to the really thick wire coming out of the floor (removing the junction box and 12 gauge wiring). Is it acceptable to leave the new stove like this, or must I install a junction box between the stove and the wire that runs to the breaker panel?