Insurance Code (usually included in commercial codals)
Section 94. Where the insured is overinsured by double insurance:
(a) The insured, unless the policy otherwise provides, may claim payment from the insurers in such order as he may select, up to the amount for which the insurers are severally liable under their respective contracts;
(b) Where the policy under which the insured claims is a valued policy, the insured must give credit as against the valuation for any sum received by him under any other policy without regard to the actual value of the subject matter insured;
(c) Where the policy under which the insured claims is an unvalued policy he must give credit, as against the full insurable value, for any sum received by him under any policy;
(d) Where the insured receives any sum in excess of the valuation in the case of valued policies, or of the insurable value in the case of unvalued policies, he must hold such sum in trust for the insurers, according to their right of contribution among themselves;
(e) Each insurer is bound, as between himself and the other insurers, to contribute ratably to the loss in proportion to the amount for which he is liable under his contract.