Price of temporary power distribution box scaffolding at construction sites

Temporary power distribution boxes for construction sites typically range from $200 to $1,500 for purchase, with rental options starting around $50 per day depending on capacity and features.

Purchase Prices

Temporary power distribution boxes, also known as spider boxes, are available in various configurations for construction sites. Basic 30A or 50A single-phase units suitable for small tools and lighting can cost $200–$500. More robust 100A or three-phase units designed for heavy-duty equipment may range from $800–$1,500 . These units often include GFCI protection, weatherproof enclosures, and multiple receptacles, and are built to comply with NEC and OSHA standards .

Rental Prices

For temporary use, many contractors opt to rent power distribution boxes. Rental rates typically start at $50 per day for smaller units, with weekly or monthly rates available for longer projects. Larger or three-phase units may cost $150–$300 per day, depending on amperage and configuration . Rental providers like United Rentals offer a wide range of options, including prefabricated panels, spider panels, and transfer switches, which can be customized for specific jobsite needs .

Factors Affecting Price

1. Amperage and Phase: Higher amperage and three-phase units are more expensive.
2. Number of Receptacles: More outlets and specialized connections increase cost.
3. Safety Features: GFCI protection, overcurrent protection, and lockable enclosures add to the price.
4. Portability and Durability: Heavy-duty, weatherproof, and mobile units cost more but are essential for outdoor construction sites.
5. Rental Duration: Longer rental periods often reduce the daily cost.

Summary

• Small single-phase units: $200–$500 (purchase), $50–$100/day (rental)
• Medium 50–100A units: $500–$1,000 (purchase), $100–$200/day (rental)
• Large three-phase units: $1,000–$1,500+ (purchase), $150–$300/day (rental) Choosing between purchase and rental depends on project duration, frequency of use, and budget. Prefabricated and ready-to-install units save installation time and improve safety on construction sites .