Voltage ratings for 3-pole, 4-wire electrical devices include 125/250 V. Voltage ratings for 4-pole, 5-wire devices include 347/600 V. Power connectors provide a variety of maximum current ratings, ...

Strongwell ’s SE28 fiberglass power transmission pole has a higher strength-to-weight ratio than steel, wood or concrete and weighs substantially less, i.e. approximately 30% the weight of wood, 60% ...