Which fastener is used for suspension insulators?

The use of suspension clamps for suspension insulators is primarily due to their function and design, which are specifically suited for holding the insulators in place while allowing for the necessary flexibility and movement due to environmental factors, such as wind or temperature changes. Suspension clamps support the weight of the insulator and help maintain the distance required between conductors and the supporting structure. This ensures proper clearance and safety in power transmission and distribution systems.

In contrast, other options like anchor bolts and strain insulators serve different purposes. Anchor bolts are typically used to secure equipment firmly to a base or ground and are not designed for the unique characteristics of insulator mounting. Strain insulators are designed to be used in situations where conductors experience tension, such as on straight runs of wire, rather than for suspending insulators. Connection straps are used to connect different components, but they don't serve the specific purpose of securing suspension insulators in an overhead system. Thus, the specialized design of suspension clamps makes them the correct choice for this application.