Do you need to earth both ends of SWA cable?

Do you need to earth both ends of SWA cable?

Yes, the armour should be earthed at least at the “supply” end. This ensures that anything that penetrates the cable (saw, drill, etc) will be earthed before the live cores are reached, and is therefore less likely to become energised.

Should SWA cable be earthed?

The armour does provide some mechanical protection and it is important that the armour is earthed so that if the cable were penetrated (e.g. by a garden fork), the supply would automatically be disconnected by the protective device under this fault condition.

Can SWA armour be used as Earth?

Armouring: Steel Wire Armour (SWA) used for mechanical protection. That way the cable can withstand higher stresses, be buried directly and used in external or underground projects. The armouring is usually connected to earth and can be used as the CPC (as described above).

Does SWA need to be glanded?

Although it would be good practice to make off the SWA into a gland so that the armour is connected to the motor, this is not essential because the motor already has a CPC. Whether banjos, piranha nuts, and fly leads are required to make sound connexions is another matter entirely.

Why is cable armour earthed?

Purpose of cable screen. Cable screen controls the electric field stress in the cable insulation. It also provides return path for cable neutral and fault current. If the screen is earthed at two ends than it provides shielding for electromagnetic radiation.

What Colour is Earth on Armoured cable?

and use the black as earth, but it needs green/yellow sleeve. If you use a colour other than brown for a live function (eg a switched live in a lighting circuit) this conductor should be tagged with a brown marker.

Can I put Armoured cable above ground?

The cable can be run above ground, so long as it is kept away from anything that may damage the wire. To achieve this, and stop rodents from destroying the wire, install it at height with cleats. If you’ll be running the cable underground then you’ll need to lift the floor to make enough space and depth.

What Colour is Earth in Armoured cable?

Does Armoured cable need to be buried?

Ideally the cable should be buried at a sufficient depth so as not to be easily hit by say a pick or shovel. it should also have marker tape buried above it close to the surface so that anyone digging above the cable finds this first and it should warn them that a cable is below.

What are wire armour cable earthing terminals?

All wire armour cable terminations are “made-off” from the front without the need of a spanner providing an effective earth bond. The Charles Endirect range of earthing terminals includes compression glands, CET’s, saddles, terminal blocks and gland plates for the earthing and bonding of all steel wire armoured (SWA) street lighting cables.

Why is it important to ensure SWA cables are effectively earthed?

This article considers why it is important to ensure steel wire armour (swa) cables are effectively earthed. Regardless of whether the armouring of a steel wire armoured cable (swa) is employed as a protective conductor or not, it should always be effectively earthed to ensure the requirements of ADS are met.

Why use cel for cable earthing?

CEL offers a comprehensive range of earthing components that cater for all standard size armoured cables – the terminals are easy to use and install by the street lighting engineer. All wire armour cable terminations are “made-off” from the front without the need of a spanner providing an effective earth bond.

What are the Charles endirect earthing terminals?

The Charles Endirect range of earthing terminals includes compression glands, CET’s, saddles, terminal blocks and gland plates for the earthing and bonding of all steel wire armoured (SWA) street lighting cables. Pictured: Earth Terminal CET002 – shown terminating wire armoured cables with the armours in the splayed position.