Product wiring: main line: M5 threaded stud (100a 32V DC. Single wire: M4 threaded stud (30a 32V DC. 【UNIVERSAL PROTECTION】Whether you are building a large land-based lighting setup, or adding electric windows, The fuse box has a capacity of 100A, each fuse is 30A, and has a ground bus, which is enough to protect all your hard work. ).