Do you have to gland both ends of SWA?
Glands should always be fitted at both ends to correctly terminate the cable into the enclosure, if the armour isnt being used as the cpc then an earth banjo at the supplly end will do.
Do you have to gland SWA cable?
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.
Can you use plastic glands on SWA cable?
You may not have come across PVC Enclos or Plastic Rotary isolators but if you connect to them with SWA having a conductor available for an Earth then there is no requirment to connect the “insulated” armour to anything and if you do there will be no increase in safety, in fact you could introduce an earth path for …
How do you install a cable gland?
Installation:
- Begin by opening the cable gland and detaching the nut.
- Use a suitable tool to peel back the outer sheath of the cabling to a length that matches the size of the gland.
- Insert the right end of the gland into the cable and lay the peeled sheath or armour evenly around the gland.
How do I cancel SWA to twin and earth?
SWA cable can be bent around any angle as long as the radius of the bend isn’t too tight. You can terminate the SWA cable in either a plastic of metal box using an SWA gland and earth ring (banjo) and the third wire should also be earthed.
How do you terminate SWA cable?
Mark where you want to terminate the swa with tape. Use a hacksaw & score the armour, using the tape as a guide. Use a knife & strip the outer sheath. Bend the armour back & forth (tip: small groups & bend at 90deg to the score) until the strands snap off.
Can I use a stuffing gland on Armoured cable?
It all rather depends what you are doing with the armour and the CPC for the circuit – in extremis you could have 2 stuffing glands on at each end and comb the armour into an earth terminal, electrically fine, though the purists may tut a bit. The equivalent for SY is common.
How do I terminate a large SWA cable?
Straight forwardly terminate the cable SWA onto the gland etc, then push the inner cores into the Switchgear chanmber and connect the the gland to the switchgear base via the 4 bolts (which you previously lined up and drilled) Pull up the heat shrink and shrink over the SWA connection.
Can you put a 3 pin plug on Armoured cable?
Armoured cable can be connected to 3 pin plug of commando type but not to a 13A plug without some junction box. Most caravans will be supplied from a RCD with a 2.5 or 4 mm sq flexible cable laid across the grass.
Can a SWA be taken into an enclosure without a gland?
Taking SWA into an enclosure without the use of any form of gland is also unacceptable since the weight and rigidity of the cable means it must have mechanical support and fixing at entry to an enclosure. This is a picture of the seven parts of the somewhat inappropriately named three part gland kit.
How big of conductor do I need for SWA cable?
The conductor cores vary from 1.5mm for lighting circuits up to 16mm for heavy duty loads in domestic situations, some industrial SWA cable is much thicker. The galvanised steel wire can be used as an additional earth and sometimes is used as the only earth, although this is not recommended.
What do you need to know about a wire gland?
You must get the correct size and type of gland for the job at hand. If it is outside the gland must be waterproof. The gland serves two purposes, firstly it holds the wire and prevents it from being pulled out of the appliance and secondly it acts as a secondary earth.
What’s the best way to terminate a SWA cable?
For the smaller and intermediate sizes of SWA, the quickest way to cut it to length is using a large pair of bolt croppers: (for very large sizes of cable a hydraulic assisted cutter or saw may be a better option). For the purposes of this example we will terminate some XLPE insulated (PVC sheathed) 4mm² two core SWA: