According to Ken Blackwell and Art Leffer, the proposed constitutional Tax and Expenditure Limit (TEL) amendment would "re-establish fiscal discipline for Ohio's state and local governments. In short, Ohio's TEL initiative would limit state and local spending growth to the greater of 3.5% or the sum of inflation and population growth."
What is a TABOR? Are you referring to the guy who was running in the NC-05 congressional primary last year? (I think his last name was Tabor.)
TABOR is a "Taxpayers Bill of Rights" or pretty much exactly what you are calling "TEL".
It looks like the same thing with a different name, but TELs exemption seems slightly bigger then the TABOR exemption which was limited only to inflation plus population growth.
The only way to raise taxes after that is a referendum.
Colorado has it as does several other states, it looks like Blackwell just modified it and gave it a new name, but its looks like basically the same thing.
Its a good bill and I wish more states had it, but its movement is growing.