Fiberglass Junction Boxes (JBF)

CerAnode’s JBF Fiberglass Junction Boxes are non-metallic enclosures engineered to house and protect electrical connections for CP anodes, rectifiers, and monitoring circuits. Built with fiberglass-reinforced polyester (FRP), JBF units offer durable, weather-resistant protection for cathodic protection system wiring, bonds, and test leads, including in harsh, corrosive, or outdoor environments.

Lightweight yet robust, the JBF series ensures safe and long-lasting termination points and junctions without the corrosion or conductivity issues associated with metal enclosures. Their design supports single or multi-circuit CP configurations, making them a versatile component in impressed-current cathodic protection (ICCP) or galvanic systems.

Key Features & Benefits

Materials & Construction:

Fiberglass-Reinforced Polyester (FRP) Enclosure: Provides excellent corrosion resistance and protects internal wiring from moisture, salt, chemicals, and UV exposure—ideal for CP environments in soil, coastal, or industrial settings.
Non-Conductive & Electrically Safe: The non-metallic nature of fiberglass prevents accidental grounding or short-circuits, enhancing safety when handling multiple anode or structure cables.
Watertight, Dust-Tight Seal: Equipped with a continuous gasket and captive stainless-steel cover screws, ensuring reliable sealing against water spray, rain, dust, or wash-down environments.

Durability & Environmental Resistance:

Impact & Weather Resistance: The FRP box resists impacts, UV, salt spray, and thermal cycling, making it suitable for outdoor, marine, or remote installations where metal boxes would corrode.
Long Maintenance Cycle: Because fiberglass does not rust and withstands environmental stress, the JBF tends to require less maintenance compared to metal junction boxes over the life of a CP system.
Lightweight & Easy Handling: Easier to transport and install than heavy metal enclosures—useful for field sites, remote CP installations, or areas with limited access.

Flexibility & Installation:

Multiple Knockouts / Conduit Entries: Designed to accept several cable entries, allowing multiple anode leads, structure leads, test leads, and reference electrode cables to terminate in one box, simplifying wiring and cable management.
Mounting & Mount Options: Typical JBF enclosures include molded-in mounting flanges or feet for wall, pole, or skid mounting; can be used in junction-box arrays, test-stations, or standalone anode/splice boxes.
Customizable Size / Back Panel Options: Available in multiple sizes and adaptable to include back panels, terminal strips or bus-bars to suit the scale of the CP system.

Applications

Junction termination for impressed-current anode beds (tank bottoms, pipeline ground beds, linear beds).
Cable splice or bonding boxes for multi-anode CP systems.
CP test stations and monitoring points—housing structure leads, reference electrodes, and test cables.
Remote or outdoor CP installations, including tank farms, pipelines, marine structures, or underground vaults.
Retrofit sites where existing metal boxes are corroded or where non-conductive separation is critical.

Installation & Accessories

1. Mounting: Secure the fiberglass box to a wall, pole, or skid using the molded mounting feet or flanges for stability.
2. Cable Entry: Use conduit entries or sealed cable glands through knockouts to feed anode leads, structure leads, reference cables, or test leads—ensure gaskets remain intact for watertight integrity.
3. Internal Wiring Termination: Install a phenolic or non-conductive back panel with lugs, bus bars, or terminal strips to organize and terminate cables—label wires for clarity and maintenance per CP standards.
4. Sealing & Protection: After installing leads, reattach cover tightening captive stainless screws to maintain dust- and moisture-tight seal; consider using desiccant or moisture-absorbing media if in humid or marine environments.
5. Integration with CP System: Connect anode leads, structure leads, and reference leads to the rectifier, monitoring system, or test post; test continuity and measure initial potentials after startup.