The limitations prescribed in Section 13093 shall not be applicable to the issuance of any refunding bonds pursuant to this chapter, and the amount of any issue of such refunding bonds may equal, but shall not exceed, the amount required for the payment or redemption of the bonds to be refunded thereby, including the premiums, if any, due upon such redemption, but excluding any interest due upon such redemption.
Ca. Pub. Util. Code § 13094