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Generator Docking Station Topologies

UL 891 switchboard topologies for temporary power, permanent generators, and load bank testing. Click any configuration below to see the use case and details.

Identify your one-line configuration

Click a card to flip it and see the use case. Click "More Details" for renderings and specifications. One-line diagrams and renderings are embedded directly in this page for engineering review.

Basic Temporary Inlet

Basic Temporary Inlet one-line diagram

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No Load Bank

Temporary Generator

No Permanent Generator

Feeds Building

Temporary generator only feeding the building load. No permanent generator or load bank. Temporary generator cam connections feed through the temporary generator isolation breaker to the building load.

Basic Temporary Inlet

Dual Generator Docking Station

Dual Generator Docking Station one-line diagram

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No Load Bank

Temporary Generator

Permanent Generator

Feeds Building

Permanent generator lands at the bus, with the generator breaker located at the generator set. Temporary generator cam connections feed through the temporary generator isolation breaker. No load bank.

Dual Generator Docking Station

Isolated Dual Docking Station

Isolated Dual Docking Station

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Load Bank

Temporary Generator

Permanent Generator

Feeds Building

Similar to the Dual Generator Docking Station, but adds a local isolation breaker on the permanent source feeding this bus, or a utility isolation breaker, so the Automatic Transfer Switch has a defined upstream breaker.

Isolated Dual Docking Station

Isolated Load Bank

Isolated Load Bank

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Load Bank

No Temporary Generator

Permanent Generator

No Building Feed

Permanent generator feeds the load bank cam connections through a load bank breaker only. Stand-alone load bank connection.

Isolated Load Bank

Permanent Load Dump

Permanent Load Dump

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Load Bank

No Temporary Generator

Permanent Generator

Feeds Building

Permanent generator feeds the building load, with a switched connection to the load bank.

Permanent Load Dump

Dual Purpose Docking Station

Dual Purpose Docking Station

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Load Bank

Temporary Generator

Permanent Generator

Feeds Building

Permanent load bank configuration with an added temporary generator inlet through a temporary generator isolation breaker. Dual-purpose configuration.

Dual Purpose Docking Station

Paired Distribution Hub

Paired Distribution Hub

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Load Bank

Temporary Generator

Permanent Generator

Feeds Building

Paired distribution layout: permanent generator and load bank on one side; temporary generator and building load on the other. Short copper runs to each device side. Load bank remains on the generator side.

Paired Distribution Hub

Interlocked Hub

Interlocked Hub

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Load Bank

Temporary Generator

Permanent Generator

Feeds Building

Dual-purpose interlocked hub. Permanent generator can feed the building load or the load bank, and a temporary generator inlet is provided. Interlocked so only one path, load bank or temporary generator, can be active.

Interlocked Hub

Service Entrance Docking Station

Service Entrance Docking Station

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Load Bank

Temporary Generator

Permanent Generator

Feeds Building (Service)

Service entrance version. Adds a utility isolation breaker, SERTK, so this cabinet serves as the service disconnect. Supports permanent generator, temporary generator, and often load bank connections.

Service Entrance Docking Station

Review Required: Configurations shown are representative only. Final configuration, ratings, interlocks, service entrance requirements, bonding, and protection must be reviewed against project specifications, applicable codes, utility requirements, and AHJ requirements.

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