Grounding jumpers fitted with which type of clamps are designed for tubular bus diameters up to 2.5 inches?

The correct choice is based on the specific design of grounding jumpers that accommodate tubular bus diameters. All Angle clamps are specifically engineered to secure to various bus configurations, including those that are tubular and up to 2.5 inches in diameter. This design allows for a versatile grounding solution, ensuring a reliable electrical connection while promoting effective grounding practices necessary for safety and operational efficiency. The unique shape of the All Angle clamp enables it to adapt to the bus surface, ensuring a snug fit that contributes to the integrity of the grounding system.

In contrast, Flat clamps are meant for flat conductive surfaces and would not adequately connect to tubular bus bars. Circular clamps typically refer to designs that might not provide the necessary adaptability for various tubular diameters, limiting their application. Adjustable clamps, while versatile, might not have the specific fit and design needed for optimal performance on pipes or tubular connections when it comes to grounding applications. Hence, All Angle clamps are the suitable choice for this specific requirement.