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Power distribution is the system used to deliver electricity from a supply to the equipment that needs it on a film set. It includes the arrangement of feeders, distribution boxes, branch circuits, connectors and protective devices, together with the planning and supervision needed to use them safely. Crews often shorten the term to distro, especially when referring to distribution equipment.
The supply might be an approved building service, a generator or a battery-based power system. Distribution is what happens between that source and the lights, monitors, trailers or other loads. A distribution box does not create additional electricity. Its available capacity remains limited by the source and every relevant part of the system.
What the System Does
A production rarely needs all its power in one place. Lighting may be outside a window while video equipment is inside, and support facilities may sit across a parking area. Distribution brings suitable circuits to these working areas without requiring every device to connect directly to the original supply.
The plan considers equipment demand, voltage, cable routes, environmental conditions, access and protective arrangements. Long cable runs and changing loads can affect performance. An outlet that accepts a plug is not proof that the circuit can supply the equipment safely, and two wall outlets may share the same upstream circuit.
Qualified electrical personnel assess the system as a whole. They identify supplies, select appropriate equipment, inspect it, allocate loads and establish who may connect or modify it. A dictionary explanation is not a substitute for electrical training, manufacturer instructions or the applicable electrical rules.
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Who Handles Power Distribution?
The lighting and electrical department commonly manages production power, with the gaffer overseeing the department and the best boy electric coordinating equipment and crew. Larger productions may employ a rigging gaffer and an advance crew to install distribution before the shooting unit arrives. Generator operators and venue electricians may also be involved.
Responsibilities vary by jurisdiction, contract and location. The important practical distinction is between requesting power and authorizing an electrical connection. A camera assistant can identify what their charging station requires without becoming responsible for altering a distribution panel.
Other departments should communicate their needs early. A seemingly modest last-minute addition can matter if the planned circuit is already committed, the equipment has a large startup demand, or its position introduces a new cable route.
A Practical Location Example
Imagine a night scene in a closed restaurant. The lighting plan calls for sources outside the windows, practical lamps inside and a video station near the entrance. Catering and wardrobe also need power elsewhere on the property.
During the scout, the electrical team checks the available supply and the separate departmental requirements. The plan identifies where distribution equipment can be positioned, how cables can reach their destinations, and which routes must remain clear. Production and locations coordinate access with the owner rather than assuming every visible socket is available.
On the day, a new heater request goes back to the electrical team. It is not casually added to the same circuit as the video station. The example illustrates why distribution is a coordination task as well as an equipment package: changes need to be evaluated against the actual system.
Distro, Dimming and Data Are Different
Distribution supplies electrical power. A dimmer or lighting control system changes a fixture’s output or operating settings. Some equipment combines functions, but the concepts remain separate. Many modern fixtures receive continuous power while control commands arrive through a separate data connection or wireless system.
DMX carries lighting-control information; it is not a replacement for a fixture’s power supply. Likewise, a battery powering a lamp is a source, while the approved equipment that routes its output belongs to the power arrangement. Identify both the power path and the control path when troubleshooting a lighting setup.
Safety and Everyday Set Etiquette
Do not bypass protection, improvise adapters, open electrical panels or connect unfamiliar high-current equipment. Report damaged cables, unusual heat, burning smells, standing water near equipment and repeated trips to the responsible electrical personnel. A protective device operating is a reason to investigate, not an invitation to keep resetting it.
Cable management must account for pedestrians, vehicles, doors, weather and emergency access. Protective measures need to suit the equipment and conditions. Keeping a cable out of the shot does not by itself make the route safe.
Does a Small Shoot Need a Distribution Plan?
Yes, although the plan can be modest. An interview using a few lights still benefits from knowing which supply is available, what else uses it and who is responsible for changes. Lower equipment counts reduce complexity; they do not eliminate electrical hazards.
Good distribution is usually unobtrusive. The lights remain reliable, departments have the power they agreed on, and the crew can move without turning the electrical system into an obstacle course.
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Related Terms
Gaffer · Best Boy Electric · Genny · Genny Operator · Juice · Pre-Rig