Things You Can’t Do With Push-in Terminal Wiring
Generally, it is forbidden to connect two transmission lines with a push in terminal block. When push in din rail terminal blocks is limited and must be used, it is advisable to use a special push fit din rail terminals for connecting two transmission lines, otherwise a larger or larger push fit terminal block should be used. It is forbidden to connect two transmission lines with a push in terminal because the two transmission lines are pressed in at the same time, and the insulation layer of the conductor cannot enter the insulating sheath of push in type terminal block, so the copper wire will be exposed and the insulation level is not good.