Section 68.348 - Changes in equipment and circuitry subject to a Supplier's Declaration of Conformity(a) No change shall be made in terminal equipment or protective circuitry that would result in any material change in the information contained in the Supplier's Declaration of Conformity Statement furnished to users.(b) Any other changes in terminal equipment or protective circuitry which is subject to an effective Supplier's Declaration of Conformity shall be made only by the responsible party or an authorized agent thereof, and the responsible party will remain responsible for the performance of such changes. 66 FR 7586 , Jan. 24, 2001