Hemingray D - 518 Made in the USA Flashed amber spools located near the end of my property . I counted about a dozen amber spools located within a block of my home, but no where else. All the other areas have been upgraded . I know there would be more elsewhere in the city, but mainly in the older neighberhoods that use secondary lines like these. Two 110 volts and a neutral middle line. The middle inulator is the clear Hemingray D-518 made in the usa version. These are for residential only. Note the insulation is coming off now and exposing the bare copper wires...