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I could send you some pictures if you want, but it does sound like these are inductors. They are in the same type of cylindrical housing as transformers, so a coil of wire would likely be a good fit. There's other hardware on the poles that have me puzzled, too. One was a set of feeds, again in series with all three phases, that went into a fairly large rectangular box (total of six terminals). Plenty of other wires came and went into that box, down the pole to two cabinets mounted three feet from the ground. In addition, a small yagi antenna was bolted to the pole about half way up, its feed also going down to one of the two cabinets. The mystery of what all that was about was solved by a sign on the pole identifying it as "TIE RECLOSER #XXX." OK, that was an easy one! A few poles down from that there's another bunch of poletop hardware, with another six terminal rectangular box. This one has a warning sign to the linemen to "Service capacitors in accordance with directive XXX," and "AVOID INJURIES. Wait five minutes after disconnecting capacitors before servicing." OK, I guess this is a capacitor box of some type. Maybe they use the capacitors to balance their inductors! Thanks so much for the help, Bert.
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