SWA Armour

Post new thread

Discuss SWA Armour in the UK Electrical Forum area at ElectriciansForums.net

D

davel81

Hi

Ive got to run in some SWA cables for some large bits of equipment. Its TP&N, is there any issues with using 4 core and using the armour for the earth (ensuring the Zs is ok)?
 
There's a thread on here about this very subject and someone posted a table showing what was acceptable and what was not, so if you find it you'll know long before you do your Zs test.
 
as long as the armour is of sufficient csa. generally all SWA up to 90mm complies. some of the xlpe SWA doesn't.
 
Unless cost is massively different I'd always use 5 core.... here's a link for you to look at

http://www.gadsolutions.biz/component/k2/item/3-swa-as-cpc
 
Brightspark2 said:
As long as the armour meets the requirements then theres no problem at all...

Earthing Nuts - Speed up metal cable gland installation and EMI / RFI screening

Have a look through table 5 under technical info...
Click to expand...

THROW THAT DAMMED TABLE AWAY!! It causes more confusion, than any help!!

Use this table where all the calculations have been done for you...


Blue = min CSA of cables SWA to comply.

(Red) = Cable does not comply.

Table for 70[SUP]0[/SUP]C Thermoplastic PVC SWA cables.


Conductor CSA​

Minimum CSA of SWA to meet 54G​

CSA of armour 2 core​

CSA of armour 3 core​

CSA of armour 4 core​

1.5​

3.4​

15​

16​

17​

2.5​

5.7​

17​

19​

20​

4​

9.0​

21​

23​

35​

6​

13.6​

24​

36​

40​

10​

22.6​

41​

44​

49​

16​

36.1​

46​

50​

72​

25​

36.1​

60​

66​

76​

35​

36.1​

66​

74​

84​

50​

56.4​

74​

84​

122​

70​

79.0​

84​

119​

138​

95​

107.2​

122​

138​

160​

120​

135.3​

(131) ​

150​

220​

150​

169.2​

(144) ​

211​

240​

185​

208.6​

(201) ​

230​

265​

240​

270.6​

(225) ​

(260)​

299​

300​

338.3​

(250) ​

(289)​

(333)​

400​

403.9​

(279) ​

(319)​

467​


Table for 90[SUP]0[/SUP]C Thermosetting SWA cables operating at 70[SUP]0[/SUP]C.


Conductor CSA​

Minimum CSA of SWA to meet 54G​

CSA of armour 2 core​

CSA of armour 3 core​

CSA of armour 4 core​

1.5​

3.4​

16​

17​

18​

2.5​

5.7​

17​

19​

20​

4​

9.0​

19​

21​

23​

6​

13.6​

22​

23​

36​

10​

22.6​

26​

39​

43​

16​

36.1​

41​

44​

49​

25​

36.1​

42​

62​

70​

35​

36.1​

62​

70​

80​

50​

56.4​

68​

78​

90​

70​

79.0​

80​

90​

131​

95​

107.2​

113​

128​

147​

120​

135.3​

(125) ​

141​

206​

150​

169.2​

(138)​

201​

230​

185​

208.6​

(191) ​

220​

255​

240​

270.6​

(215) ​

(250)​

289​

300​

338.3​

(235) ​

(269)​

(319)​

400​

451.0​

(265) ​

(304)​

452​


Remember these tables refer to complying with CPC requirements, They do NOT refer to Bonding CSA requirements...
 
Last edited by a moderator:

Reply to SWA Armour in the UK Electrical Forum area at ElectriciansForums.net

Similar Threads

Tequila
UK Bonding of extraneous conductive frame
TNC-S main supply with 16mm swa supplying garage consumer unit from main consumer unit in house, then 4mm swa supplying pond equipment through...
Replies
36
Views
3K
cliffed
cliffed
G
UK Steel Tape Armour and Reduced Neutrals
Hi, someone has ordered Steel Tape Armoured cable instead of SWA. Can I use this armour as a CPC the same as SWA or not and if so is there a table...
Replies
13
Views
1K
GreyBeard
G
mak
Question about earthing the armour of SWA
If cpc core is present i.e. it's either 5 core three phase or 3 core single phase — is a banjo connected with a brass screw into steel trunking...
Replies
7
Views
2K
pc1966
P
R
UK Class II enclosure + gland recommendation for divorcing SWA armour at TT outbuilding/shed?
As the title says, I am looking for a recommendation for an enclosure and gland arrangement to electrically isolate or divorce the earth/armouring...
Replies
25
Views
5K
pc1966
P
B
Swa alternative for outdoor
Armoured cable or equivalent to go around garden border for on the ground flood lights everyone using any alternative to swa, will H07RN be OK or...
Replies
5
Views
743
Rockingit
Rockingit

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

Tags

advice aus cable circuit course earth electric electrical electrician hello led light lighting lights looking new please question rcd socket supply switch testing training wiring
This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Tiling Advice
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock