Whether the wire entry and exit distribution box should be reserved length
If the cable, the current should be appropriate to reduce, take 6-7A more appropriate. Total power 1300-1500W.
3 * 16 is the three-core 16 square cable, 5 * 16 is 5 core 16 square cable
KVV22-450 / 750V is low-voltage armored control cable 2 is two 2 is not the meaning of two, 2 is the meaning of two layers of protective layer 4 * 25 you look wrong, because it is 4 * 2.5mm (square) Of the cable only 3 * 25mm + 1 * 16mm cable
