TEST OF ELECTRIC CORD

E&MP 41.004

Electric Wire

no date

Fires and shocks in 25,000,000 homes reduced by test cord to find its toughness and safety factor.

Lamp cord is put to the stretch test at Underwriters' Laboratories by engineer Ed Wagner.

To win the UL label of approval, two inches much stretch to nine without breaking.

Original Caption by Science Service
© Underwriters' Laboratories