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I have installed a HA4-2xDZ47X-60A with 10 awg stranded wire with no wire ferrules. The wires keep coming out of the wire connector clamps after I tightened the screw clockwise. Do you recommend that I install wire ferrules to keep the wire ends in the wire connector clamp?

Hello, for the HT3-M25, 60 A in a 12v system, may I use only one side (Positive only) of the breaker of I have to use both side (positive and negative)? Thank you