Composite solid core post insulator is usually installed in the vertical position, but they can also be used horizontally. Note that when using them in horizontal applications, the working load strength must be de-rated for 50% of the net weight of the unit. In other words, if you have a station post rated at 2,500 lbs. cantilever, the maximum recommended working load is 1,000 lbs.

Composite solid core post insulator is often used in power station and substation for supporting and insulation wire. Composite solid core post insulators are available in various electrical and mechanical rating. There are two types for this series, normal and anti-pollution type.