A Century of Excellence in Portable Earthing Solutions
PENTA, formerly known as P&B Weir Electrical Ltd, is a globally recognised designer, manufacturer, and supplier of temporary portable earthing equipment and electrical safety products. With a heritage spanning over a hundred years, PENTA has established itself as a leader in providing reliable solutions and technical expertise for the safe maintenance of power systems.
Comprehensive Earthing Solutions
Offering a wide range of portable earthing equipment tailored to meet the diverse needs of the electricity supply industry, PENTA’s product portfolio includes solutions for both substation and distribution line earthing, ensuring safety and compliance across various voltage levels.
Substation Portable Earthing Equipment
For substations, PENTA provides an array of portable earthing equipment designed for use up to 400kV. This range includes:
Earth End Clamps: Secure connections to the earth grid.
- Line End Clamps: Designed for attachment to busbars and conductors.
- Aluflex Leads: Flexible, durable leads facilitating connections between clamps.
- Operating Poles and Sockets: Essential tools for the safe application and removal of earthing equipment.
- Spigots and Fixed Earthing Solutions: Customised solutions for specific substation configurations.
Notably, PENTA’s substation portable earthing equipment has been selected by the National Grid for their line end and earth end clamp requirements, underscoring the trust and reliability associated with their products.
Distribution Line Earthing Kits
For distribution networks operating up to 66kV, PENTA offers customisable earthing kits comprising:
- Line End Clamps: Available in various designs, including the S9B range and CE62 quick snap-on versions.
- Earth End Clamps and Cross Arm Clamps: Ensuring robust connections to earth rods or existing earthing points.
- Aluflex Leads: Offered in multiple sizes to suit different current ratings.
- Cluster Bars and Terminal Plates: Facilitating the simultaneous earthing of multiple phases.
- Operating Poles and Sockets: Designed for the safe handling of earthing equipment during installation and removal.
These kits are fully customisable to meet specific operational requirements, reflecting PENTA’s commitment to providing tailored solutions for their clients.
Innovative Products: Reflect Aluflex Kit
Demonstrating a commitment to innovation, PENTA has developed the Reflect Aluflex Kit, an ideal solution for night-time operations and work in low-visibility environments such as tunnels. This kit features highly reflective Aluflex leads with orange marking helices and reflective silver strips, enhancing visibility and safety during inspections and maintenance activities.
Quality and Compliance
PENTA’s products are designed and manufactured in compliance with relevant industry standards, such as the Energy Networks Association Technical Specification (ENA TS) 41-21, which covers portable earthing equipment for use on power systems up to 400kV. This adherence to standards ensures that their equipment meets stringent safety and performance criteria.
Global Reach and Expertise
With over 1,200 employees across 18 subsidiaries worldwide, PENTA adapts its products to meet the electrical standards and regulations of various countries. Their extensive experience and global presence make them a trusted partner for utilities and industries seeking reliable earthing solutions.
For more details visit pentaesp.com.
About PENTA
We are an expert manufacturer of electrical safety solutions, driven by a commitment to ensuring your safety in every intervention.
PENTA is trusted by Linesmen, Maintenance Technicians, and Electrical Engineers working across global electricity generation, transmission, and distribution networks, as well as 9 other critical industries.
We safeguard your operations with cutting-edge safety technology designed to meet the highest standards in the most demanding environments. Count on PENTA—where safety meets innovation.


