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DTE and DLC's series street lighting circuits becoming extinct
I just got back from a trip up to Michigan and I got bad news. Detroit Edison and Detroit Lightning Commission has made a huge update on their street lighting system. They have replaced almost lall the streets lights with efficient LED lights which is good. The bad news is, they have replaced just about all their series street light circuits with standard 120/240 wiring. Fortunately I tookmany photographs of the old circuits last years during the winter so I at least got many photographs of them while they were still up.
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Did you get any of the insulators? In the hobby these would be the CD 125 Hemingray-15 and according to a fellow collector, clear CD 155 Hemingray-45 were used too.
Are they taking down the loops entirely or are they adapting them for 240/120V?
What they did here on the muni system was all the sections that had 2 conductors were modified to remove the "break" insulator by each light and the streetlight connection moved to use both conductors. Those sections that had 1 conductor were replaced with regular duplex secondary wire. The sections of 6.6A line still on crossarms are slowly but surely being replaced with duplex as well.
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