N.J. Stat. Ann. § 17:37-3

The directors of any mutual fire insurance company of this State issuing assessable policies may borrow money to an amount not exceeding $25,000.00, for and on behalf of the company and in its name, to pay losses and expenses for which the company is liable, and may raise moneys by assessments to pay the sums so borrowed, in the same manner as they are authorized and directed to raise money to pay losses. This limit shall not apply to any mutual fire insurance company issuing nonassessable policies.