def METHOD_NAME(self):
    """
    Retrieves present electric current supplied by PSU
    Returns:
        A float number, electric current in amperes,
        e.g. 15.4
    """
    psu_current = self._get_pmc_register(self.psu_current_reg)
    if (psu_current != 'ERR') and self.get_presence():
        # Converting the value returned by driver which is in
        # milliamperes to amperes
        psu_current = float(psu_current) / 1000
    else:
        psu_current = 0.0
    return psu_current