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The correct choice regarding the installation of a Type 1 Transient Voltage Surge Suppressor (TVSS) is that it can be connected to the line side of the service disconnect. This is significant because a Type 1 TVSS is specifically designed for installation at the service entrance of a building. When connected on the line side, it can provide protection against surge events before they enter the electrical system, thereby safeguarding both the electrical equipment and the connected loads.

Type 1 TVSS units are compliant with specific installation guidelines that allow them to be installed in this manner to effectively clamp potentially damaging voltage spikes. This setup helps ensure that any transient voltages are mitigated before they can cause harm to sensitive electronics and other equipment within the facility.

In contrast, some of the other options present limitations or misconceptions about the installation of Type 1 TVSS devices. While a Type 1 TVSS can be installed indoors, it is not exclusively limited to indoor use, thus the notion that it can only be installed indoors is not accurate. The assertion that it must be connected to the load side of a circuit breaker is also incorrect; connecting it to the load side would not provide surge protection at the service entrance. Lastly, there are no restrictions preventing Type 1