Why do lineman call journeyman electicians narrowbacks?

Lineman often refer to journeyman electricians as "narrowbacks" due to the physical differences in their work environments and body types. The term suggests that electricians typically have narrower backs compared to linemen, who frequently lift heavy equipment and work in more physically demanding conditions. Additionally, the nickname reflects the linemen's perception of electricians' roles being less physically intensive, which can lead to a friendly rivalry between the two trades.