How to Install A Low-Voltage Lighting Hub

The Benefits of the Hub Method

Equalizes Voltage at Fixtures

To achieve a consistent voltage across all fixtures, the wire length from each fixture to the transformer must be the same. The Hub Method ensures this equalization, preventing voltage loss. This is especially crucial for older halogen lamps, which have a narrow voltage range. Although it is less critical for LEDs, larger systems may still experience voltage drops, making voltage equalization beneficial.

Reduces Number of Splices

Traditionally, daisy chain wiring involves running one wire from fixture to fixture, resulting in a splice at each fixture. With the Hub Method, multiple fixtures can be connected at each junction, significantly reducing the number of splices. This saves time and money while enhancing the system's long-term reliability.

Makes Splices Accessible

Some hubs are placed inside junction boxes, providing easy access for troubleshooting or adding additional fixtures. This accessibility simplifies maintenance and future expansions..

Selecting the Best Hub Connectors from VOLT®

VOLT offers various hub connectors to suit different installation needs. Here are the top choices:

VOLT® Pro Junction Hub: This innovative junction box employs clamp-type terminal blocks for secure wire connections. Unlike other connectors, it eliminates the need for messy wire nuts. The new and improved version features easier-to-use clamps, enhancing installation efficiency.
VOLT® Zone Control Junction Box: This predecessor to the Pro Junction Hub utilizes 'silicone grease'-filled wire nuts. While it provides excellent connections and post-installation accessibility, adding or removing wires from the wire nuts may not be possible. However, it does come at a lower price point.
VOLT® Pro Micro-Junction Direct Burial Connector: Designed to be buried, this connector utilizes similar clamps as the Pro Junction Hub. Its connections are secure and watertight, but they become inaccessible after installation. This connector is ideal for situations where a buried hub connection is necessary.

Installation Guide

To utilize hub connections effectively, follow these steps:

Identify groups of fixtures within a 40-foot radius, known as zones.
Run a single wire from the transformer to the center of each zone, connecting it to all the fixtures in that zone.
Use one of the three hub junctions mentioned above to connect these wires.

Frequently Asked Questions

How many fixtures can a hub connector accommodate?

Each hub connector has a limit on the number of fixture wires it can handle. The Pro Junction Hub can accommodate up to 7 fixtures, while the Zone Control Hub and Pro Micro-Junction Hub can handle 4 fixtures each. If your zone has more than 7 fixtures, use two hub connectors, with the first hub connecting to the transformer and the second hub connecting to the first hub.

How many watts can a hub connector support?

All VOLT hub connectors can handle at least 20 amps, equivalent to 240 watts at 12 volts. However, if you want to achieve extremely low wattage consumption, it is advisable to switch to LED lamps instead of using halogen lamps.

Can I connect multiple hubs throughout my property?

Yes, you can connect one hub to another to conserve wire. However, keep in mind the voltage loss and total load on the wire. Voltage loss depends on wire length, gauge, and total wattage. For large systems, use a voltmeter to verify that the voltage at your hub connector falls within the operating range of your fixtures.

By following these guidelines and utilizing the Hub Method, you can efficiently install low-voltage lighting hubs, ensuring consistent voltage and reducing splices. Choose the right hub connectors from VOLT® to simplify the installation process and enhance the performance of your outdoor lighting system.