Feeder Pillar, Electrical Cabinet or Enclosure ?
Actually, all three do the same job – which is to protect electrical components from weather, dust, vandalism and unauthorised access.
GRP stands for Glass Reinforced Plastic, and has several advantages compared to traditional materials like steel or aluminium. Listed below are 10 factors why you should choose GRP over metal: –
- 1 – GRP does not rust or corrode, even in marine, chemical or industrial environments, which makes it ideal for coastal areas, chemical plants, pump stations and general outdoor installations.
- 2 – Weatherproof and UV resistant means that the enclosure will not degrade or weaken under sun exposure. This makes them perfect for any outdoor use.
- 3 – GRP is a non-conductive material, reducing the risk of any electrical shock
- 4 – All our GRP enclosures come with a 30 min fire rating, providing protection against spreading of flames, confirming to BS476 Part 7 Class 2 (surface spread of flames)
- 5 – GRP is considerably more lightweight than metal cabinets, making them easier to transport, plus they are slightly flexible where steel cabinets are strong, yet rigid.
- 6 – Maintenance of a GRP enclosure is low and is resistant to most acids, alkalis and solvents. Also, allows easy access for routine inspections and repairs.
- 7 – GRP is extremely ‘environmentally friendly’ and can be made using eco-friendly resins.
- 8 – The option to have an enclosure made in any colour from the BS5252 range, whether this is to blend in with the surroundings or perhaps promote a local company/area with a logo.
- 9 – High-quality stainless-steel fittings
- 10 – GRP provides good thermal insulation, reducing condensation unlike metal, which is not good, as it conducts the heat and cold easily.
| Feature | GRP | Metal |
| Material Composition | Made from a composite material – polyester resin reinforced with glass fibres | Typically made from steel or aluminium |
| Corrosion Resistance | Excellent corrosion resistance, Ideal for coastal, chemical or humid environments | Susceptibale to rust and corrosion though powder coated finishes can improve resistance |
| Electrical Insulation | Non-conductive and provides natural electrical insulation, enhancing safety in electrical installations | Conductive – requires proper earthing/grounding for electrical safety. |
| Weather Resistance | Very resistant to UV radiation, rain and extreme temperatures | Can degrade over time without protective coatings or paints |
| Weight | Lightweight – easier to transport, install and handle | Heavier – offers more rigidity and impact resistance but harder to move |
| Strength & Impact Resistance | Strong and tough but may crack under severe impact | Generally stronger against physical impacts and vandalism |
| Maintenance | Low maintenance – no painting or rust protection needed | Requires periodic maintenance (especially in harsh environments) |
| Cost | Usually higher initial cost, but lower lifecycle cost due to minimal maintenance | Often cheaper upfront, but higher long-term maintenance costs |
| Applications | Outdoor, coastal or chemical areas / Electrical distribution panels | Indoor industrial environments / Mechanical or heavy duty enclosures |
To sum it up, feeder pillars or whatever you like to call them, might look like plain boxes, but they’re vital to keeping outdoor spaces safe, lit, and powered up. From city streets to construction sites, these unsung heroes quietly manage complex electrical networks – rain or shine!
