Uploaded August 2026 | Updated September 2026, 3 weeks ago
Do you need to earth both ends of an SWA cable? The answer isn't as simple as yes or no.
In this video, we break down one of the most debated topics in electrical installation. We explain when steel wire armour should be connected at one end, when both ends are required, and why calling it "bonding" isn't always technically correct.
You'll learn the difference between bonding and CPCs, how Automatic Disconnection of Supply (ADS) affects your installation, when the armour forms part of the fault path, and why EMC, VSDs and inverters can completely change the answer.
Using real-world installation examples, we explain what BS 7671 actually requires and take a look at a simple SWA termination solution that helps create a reliable earth connection.
Whether you're an apprentice, electrician or electrical designer, this video will help you understand SWA cable terminations with confidence.
Find SWA Stockists ๐ hub.efixx.co.uk/SWAStockists
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Timestamps โฑ๏ธ
00:00 Do you need to earth both ends?
00:39 Bonding vs CPC explained
01:56 Why the armour becomes an exposed conductive part
03:19 Mechanical protection and EMC
04:32 Example: 3-core SWA to an outdoor office
06:11 Example: 2-core SWA using the armour as the CPC
07:18 Earthfix SWA termination
08:10 What if the armour isn't earthed?
09:08 The final answer
==============
#earthingsystem #earthing #electricalinstallation
Do you need to earth both ends of an SWA cable? The answer isn't as simple as yes or no.
In this video, we break down one of the most debated topics in electrical installation. We explain when steel wire armour should be connected at one end, when both ends are required, and why calling it "bonding" isn't always technically correct.
You'll learn the difference between bonding and CPCs, how Automatic Disconnection of Supply (ADS) affects your installation, when the armour forms part of the fault path, and why EMC, VSDs and inverters can completely change the answer.
Using real-world installation examples, we explain what BS 7671 actually requires and take a look at a simple SWA termination solution that helps create a reliable earth connection.
Whether you're an apprentice, electrician or electrical designer, this video will help you understand SWA cable terminations with confidence.
Find SWA Stockists ๐ hub.efixx.co.uk/SWAStockists
==============
Timestamps โฑ๏ธ
00:00 Do you need to earth both ends?
00:39 Bonding vs CPC explained
01:56 Why the armour becomes an exposed conductive part
03:19 Mechanical protection and EMC
04:32 Example: 3-core SWA to an outdoor office
06:11 Example: 2-core SWA using the armour as the CPC
07:18 Earthfix SWA termination
08:10 What if the armour isn't earthed?
09:08 The final answer
==============
#earthingsystem #earthing #electricalinstallation
