5(1)The powers conferred on the High Court or a judge thereof by section 12(4), (5) and (6) of the Act (summoning of witnesses, interlocutory orders, etc.) shall be exercisable in the case of a reference to a judge-arbitrator or judge-umpire as in the case of any other reference to arbitration, but shall in any such case be exercisable also by the judge-arbitrator or judge-umpire himself.
(2)Anything done by an arbitrator or umpire in the exercise of powers conferred by this paragraph shall be done by him in his capacity as judge of the High Court and have effect as if done by that court; but nothing in this paragraph prejudices any power vested in the arbitrator or umpire in his capacity as such.