The frequency responses of a single-phase powerline channel with interconnections are derived. Different loading at different branches is considered. The results indicate that there are significant attenuations and distortions as the number of branches are increased. Broadband signal with pulse width smaller than the channel delay spread causes a series of pulses at the receiver. The small impedances at the terminations cause severe distortions. As the number of interconnections at the same point increases the signal from the source to that point increases in negative sides, which has implications to electromagnetic interference.