**Original Version**

Rule 20.5-A1

**20.5-A1)
**Current Carrying circuits
operating at potentials not exceeding 400 volts to ground nor 750 volts between
any two points of the circuit and the transmitted power of which does not exceed
150 watts.
When operated at less than 90 volts, no
limit is placed on the capacity of the system. Any circuit which exceeds the above values used for
information transport shall be treated as a supply circuit and must meet the
supply requirements for the voltage involved.

**Strikeout
and Underline Version**

Rule 20.5-A1

**20.5-A1)
**Current Carrying circuits
operating at potentials not exceeding 400 volts to ground nor 750 volts between
any two points of the circuit and the transmitted power of which does not exceed
150 watts.
When operated at less than~~ 90 ~~__150__ volts, no
limit is placed on the capacity of the system. Any circuit which exceeds the above values used for
information transport shall be treated as a supply circuit and must meet the
supply requirements for the voltage involved.

**Final Version**

Rule 20.5-A1

**20.5-A1)
**Current Carrying circuits
operating at potentials not exceeding 400 volts to ground nor 750 volts between
any two points of the circuit and the transmitted power of which does not exceed
150 watts.
When operated at less than 150 volts, no
limit is placed on the capacity of the system. Any circuit which exceeds the above values used for
information transport shall be treated as a supply circuit and must meet the
supply requirements for the voltage involved.