I. All offenders committed by a court for a period of incarceration of more than one year shall be committed to the custody of the commissioner. The commissioner shall assign a newly committed inmate to an appropriate correctional facility.
II. The sentence of imprisonment of any adult committed to the custody of the commissioner shall begin to run from the date on which the person is received at a correctional facility, except that if such a person is committed to a detention facility to await transportation to the appropriate correctional facility his sentence shall begin to run from the date on which he is received at that detention facility.