Not rated for continuous amperage as the current flows between the terminals stacked on the post and is dependent on the wire and terminal used, not the PowerPost Voltage rating: 48 volts DC maximum Base material: reinforced thermoplastic Small size has mounting holes for #8 screw (2010 & 2011) Large size has mounting holes for 1/4" screw (2002 & 2003) Ideal for use as a "common ground" Cable cap is included