Patent ID: 8248058

Claim:
A system for testing power line carrier signal integrity or strength in a building electrical system prior to installation of a load control system, comprising: a transmitter module electrically coupled to a first electrical outlet at a first location of the building electrical system and configured to transmit a power line carrier signal over the building electrical system; and a receiver module electrically coupled to a second electrical outlet at a second location of the building electrical system that is different than the first location, the receiver module being configured to receive the power line carrier signal from the transmitter module, the receiver module comprising circuitry that measures at least one of the integrity and strength of the received power line carrier signal and determines, based on the at least one of the integrity and strength of the received power line carrier signal, whether the building electrical system in its current condition would enable the load control system to communicate with relay modules using power line carrier signals if the load control system and relay modules were installed in the building electrical system, the receiver module comprising a user interface configured to provide an indication of whether the building electrical system in its current condition would enable communication between the load control system and relay modules if the load control system and relay modules were installed in the building electrical system.