The maximum number of lights you can connect to a hub is five due to the size of the brass lug wire connectors. We recommend for planning purposes to only use four in case you need to add an additional light in the future. Just because you can connect up to five fixtures to a hub, doesn’t necessarily mean you will be able to run that many. Use the Low Voltage Lighting Calculator to verify each wire run to make sure the transformer can supply the necessary voltage and to verify wire size.