(B) A township that has adopted a limited home rule government under Chapter 504. of the Revised Code shall not incur net indebtedness that exceeds an amount equal to ten and one-half per cent of its tax valuation, or incur without a vote of the electors net indebtedness that exceeds an amount equal to five and one-half per cent of that tax valuation. In calculating the net indebtedness of a township that has adopted a limited home rule government, none of the following securities shall be considered:

1. (1) Self-supporting securities issued for any purpose;
2. (2) Securities issued for the purpose of purchasing, constructing, improving, or extending water or sanitary or surface and storm water sewerage systems or facilities, or a combination of those systems or facilities, to the extent that an agreement entered into with another subdivision requires the other subdivision to pay to the township amounts equivalent to debt charges on the securities;
3. (3) Securities that are not general obligations of the township;
4. (4) Voted securities issued for the purposes of redevelopment to the extent that their principal amount does not exceed an amount equal to two per cent of the tax valuation of the township;
5. (5) Securities issued for the purpose of acquiring or constructing roads, highways, bridges, or viaducts, or for the purpose of acquiring or making other highway permanent improvements, to the extent that the resolution of the board of township trustees authorizing the issuance of the securities includes a covenant to appropriate from money distributed to the township under Chapter 4501., 4503., 4504., or 5735. of the Revised Code a sufficient amount to cover debt charges on and financing costs relating to the securities as they become due;
6. (6) Securities issued for energy conservation measures under section 505.264 of the Revised Code.