Where should a primary protector be located in relation to where the cable enters the building?

The ideal location for a primary protector is "as close as practicable" to where the cable enters the building. This is important because the primary protector's role is to safeguard the internal electrical systems from surges, particularly those caused by lightning or other external electrical disturbances. By placing the protector close to the entry point, it minimizes the amount of unprotected cable inside the building, which could become a path for surges if a strike occurs.

Positioning the primary protector in this manner enhances the overall safety and effectiveness of the low voltage communication system, ensuring that any voltage spikes are addressed as early as possible in the system. This immediate response is critical in protecting sensitive electronic equipment from damage.

While choices suggesting a distance of 2 feet or 10 feet could imply some level of protection, they do not achieve the same effectiveness as placement right at the entry point, where the threat of external electrical surges first manifests.