As I noted here, the electrical specialty tags on DIY.SE are a mess. While that thread already addresses one of the chief culprits, namely circuit, another tag of confusion lurks in the mud: electrical-distribution, used by 82 questions. Again, like circuit, it adds very little value to a question over electrical, or another, more specialized electrical specialty tag such as electrical-panel or circuit-breaker; however, it is more commonly seen standalone (5 questions out of the first 15 use it in a standalone fashion). Is this another burnination or synonymization candidate, perhaps with electrical?
I think when it started, the tag was for questions that had to do with the electrical system beyond the service drop. Transformers, types of systems, etc. However, it's likely not used properly, and can probably be killed.
The tag can be removed from any questions that are not asking about the distribution of electricity.