Some engineers are hesitant about using plastic bearings in their designs. Many of them, having trusted metal and bronze bearings for years, don’t feel the need to make a switch. Others are simply ...

• Wall thickness does not directly correlate to a bushing’s strength. • Thinner bushings better dissipate heat, which is a leading cause of accelerated wear. Sometimes, thicker is better — heavy wool ...

Prior to 2023, Sec. 300.4(G) did not prohibit a plastic insulating bushing from being installed after the conductors were installed. But Sec. 300.4(G) was revised for ...