An electrical connector for clamping securely onto a threaded shaft includes a transformer bar, a connector body, a clamping component, and at least two columns for receiving streetlight taps. The transformer bar has a plurality of conductor bores, a distal end, and a bar top. The connector body is at the distal end and has first and second bosses at the bar top and first and second clamping sides. The clamping component is pivotally mounted by an attachment link to be selectively located adjacent one of the first and second clamping sides. Two columns are located adjacent the distal end of the transformer bar, protruding away from the transformer bar, one on each side, for supporting a streetlight tap and a redundant ground close to the connector body and a streetlight tap opposite the distal end.