c|net's NASA troubleshoots mysterious ISS power issue links to the NASA Blog post Crew Waits for Dragon Mission While Teams Troubleshoot Power Issue which says:
Monday morning, teams identified an issue with the International Space Station’s electrical power system and are working to identify the root cause and restore full power to the system. There are no immediate concerns for the crew or the station. An issue is being worked with a Main Bus Switching Unit (MBSU) that distributes electrical power to two of the eight power channels on the station. Flight controllers have been working to route power through the remaining six power channels. Electrical power generated by the station’s solar arrays is fed to all station systems through these power channels. Discussions are underway to determine any impacts to SpaceX’s CRS-17 cargo resupply mission targeted for launch May 1.
Is this like house wiring, where a circuit breaker box will split the power and hard wire it to different locations, and if one breaker gets thrown, that area is blacked out until you route extension cords? Or can areas choose or select from at least more than one channel?