Landscape transformer terminal capacity

How many 12 gauge or 14 gauge wires can fit in the terminal blocks of the landscape lighting transformer? Looks like some plastic lock block. I’d much prefer screw down terminals. I have 4 main 50-60ft runs and have home run cables to the transformer location. Would like to attach all direct but looks like I may need to combine ahead of the transformer and do a single or double feed of 12ga giving me around a 9ga equivalent.