Temporary Power Distribution Basics for Event Planners

A generator is only as useful as the distribution system that carries its power to where it's needed. Temporary power distribution — spider boxes, camlock panels, cable runs, and ramps — transforms a single power source into multiple safe, accessible circuits across an event site.

Spider boxes (also called distribution boxes or banded boxes) split a high-amperage generator output into several standard 120V or 240V receptacles. A typical 100 kW generator feeds a main camlock panel, which then branches to spider boxes placed near stages, vendor rows, and catering tents — keeping cable runs short and manageable.

Cable ramps protect power runs across walkways and vehicle paths, reducing trip hazards and preventing damage. For larger events, a qualified event electrician should design the distribution layout, calculate loads per circuit, and verify grounding before the first device is plugged in.

When renting distribution equipment, confirm that all cables, panels, and boxes are rated for your total load and that ground-fault protection is included. A well-planned distribution system prevents overloaded circuits, voltage drop, and the safety risks that come with ad-hoc wiring.