(a) No stock insurance company doing business in this state shall expose itself to loss on any one risk to an amount exceeding ten per cent of its paid-up capital and surplus; but, in determining the amount of such risk, no portion thereof that has been reinsured in any insurance company that meets the requirements of section 38a-85 or 38a-86 shall be included.
(b) No mutual insurance company doing business in this state shall expose itself to loss on any one risk to an amount exceeding ten per cent of its net surplus which limit on any one risk shall, in no case, exceed the amount authorized by the charter, bylaws or board of directors of the company; but, in determining the amount of such risk, no portion thereof that has been reinsured in any insurance company that meets the requirements of section 38a-85 or 38a-86 shall be included.