Dual meter position in distribution box

A dual meter position allows two electric meters to be installed in a single distribution box or pedestal, providing independent metering for separate circuits or tenants.

Overview

A dual meter setup is commonly used in multi-family residences, duplexes, or commercial applications where two separate electrical services need to be metered independently. These setups can accommodate single-phase or three-phase systems, with main breakers ranging from 100A to 800A depending on the pedestal or panel model .

Meter Socket and Panel Configuration

• Meter Sockets: Dual meter sockets, such as the Square D 205 Amp 2-gang ringless meter socket, provide two positions for meters and are compatible with multiple wiring configurations. They typically feature aluminum busbars, NEMA 3R rated enclosures, and are suitable for outdoor use .
• Busbar Arrangement: Modern dual meter panels, like Eaton's multiple metering products, use one-piece vertical busbars to reduce hot spots and improve electrical connections. Each meter position is connected to its own breaker and wireway, allowing maintenance without disturbing the other meter .
• Modular Systems: Siemens Power Mod and Uni-PAK systems offer modular dual-meter positions with features like QuickConnect and QuickPhase, allowing each meter to be phased independently and simplifying installation .

Installation Considerations

• Access and Safety: Dual meter panels often include lockable, raintight covers for tenant breakers, ensuring safety and preventing unauthorized access .
• Mounting Options: Pedestals can be wall-mounted or free-standing, with swing-away feet or mounting rails to facilitate installation .
• Compliance: Ensure the dual meter panel meets local electrical codes (e.g., NEC 2020) and utility requirements. Some older models may not be compliant with the latest standards .

Advantages

• Space Efficiency: Two meters in one enclosure save space compared to separate panels.
• Independent Metering: Each tenant or circuit can be billed separately.
• Simplified Wiring: Modular designs reduce the number of busbar connections and installation time.

Summary

A dual meter position in a distribution box provides a practical solution for metering multiple services in a single enclosure. Key considerations include meter socket type, busbar design, modularity, safety covers, and code compliance. Modern systems from Siemens, Eaton, Square D, and Tesco Controls offer flexible, durable, and code-compliant solutions for both residential and commercial applications .