Conductor to conductor
Inline, tee, cross and parallel connections can join compatible conductors in an earthing grid or bonding network.
GROUNDING & ELECTRICAL CONNECTIONS
Exothermic Welding
Permanent welded connections, shaped for the conductors and joint your project requires.
Welded connections1 / 4
AMIABLE IMPEX / PRODUCT
Exothermic welded connections
Exothermic welding creates a permanent metallurgical connection between compatible conductors using heat generated by a controlled chemical reaction. Explore joint forms, system components and selection guidance from Amiable Impex.
Conductor-to-conductor and conductor-to-electrode joint formsGraphite mould, weld material and accessories selected for the jointProject-specific quotation
Share the conductor sizes, materials, joint drawing, quantity and destination country.01 / THE METHOD
What is exothermic welding?
Exothermic welding is a method of joining compatible metal conductors using the heat produced by an exothermic reaction. In electrical earthing and grounding work, the reaction forms molten weld metal inside a purpose-designed mould. As it solidifies, it creates a metallurgical connection between the parts being joined.
Because the joint is welded rather than held only by mechanical pressure, a correctly specified and made connection does not rely on a bolt remaining tight. The exact result depends on the conductor material, dimensions, joint design, mould, weld material and installation procedure.
02 / HOW IT WORKS
How does the process work?
A matched graphite mould positions the conductors and defines the shape of the finished joint. The specified weld material reacts in the mould and flows into the joint cavity, where it bonds the connection. The welding reaction supplies its own heat; the ignition method and tools depend on the chosen system.
Each joint geometry and conductor size needs a compatible mould and weld-material selection. Installation should follow the instructions for the specific system, including conductor preparation, mould condition and appropriate hot-work precautions.
03 / CONNECTIONS
Common exothermic joint configurations
The gallery shows examples of possible forms; the required joint must be chosen for your actual conductor arrangement.
Conductor to earth electrode
Connections may be specified between a conductor and a compatible earth rod or electrode for grounding systems.
Tape and structural connections
Some mould configurations accommodate flat copper tape or connections to suitable steel components, subject to the approved system design.
04 / APPLICATIONS
Where is exothermic welding used?
Exothermically welded connections are used in earthing and bonding networks where a permanent electrical path is required. Typical projects include substation ground grids, building earthing systems, lightning protection down-conductor networks and selected industrial grounding connections.
Suitability is project-specific. The conductor combination, fault-current duty, site environment and applicable specification should be reviewed before selecting a joint.
05 / TECHNICAL SELECTION
What to confirm before ordering
These details help identify the correct joint arrangement and compatible system components.
Conductor details
Material, type and cross-section or tape dimensions for every part being connected.
Joint geometry
Inline, tee, cross, parallel, rod or structural connection, with a drawing where available.
System components
Compatible graphite mould, weld material, ignition method and any required tools or accessories.
Project conditions
Quantity, installation environment, required documentation and destination country.
The accessories pictured in the gallery illustrate system components; confirm the exact items included in your quotation.
Exothermic welding FAQs
Is exothermic welding the same as a mechanical clamp?
No. A welded joint forms through a metallurgical process, while a mechanical clamp secures conductors by pressure. The project specification determines which connection method is appropriate.
Does the welding reaction need an external power supply?
The heat for the weld comes from the exothermic reaction. Some systems use a powered ignition accessory, so check the ignition method for the selected equipment.
Can one mould be used for every conductor size?
No. Mould selection depends on conductor materials, dimensions and the joint configuration. The weld material must also match the specified system.
What should I send for a quotation?
Provide conductor materials and sizes, the joint type or drawing, quantity, installation location, required documentation and delivery country.
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