ring v radial

44ALLAN · Feb 16, 2013

i=p/u said:
5 core swa

4 core will suffice using armouring as your cpc mate as long as you gland it correctly and it passes all the relevant tests as the guys have already stated..............me.................5 core every time and dedicated earth core bolted and bonded and earthed to everything with 6mm brass nuts and bolts

Engineer54 · Feb 16, 2013

Sintra said:
SWA CPC sizes all in this PDF.

http://www.earthingnuts.co.uk/pdf/pvc_xlpe.pdf

That Earthingnuts pdf is more confusing than useful, far better to use this table when dealing with SWA CPC values and compliance's

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

Knobhead · Feb 16, 2013

That table is worth it's weight in Copper.

Pitty no one ever follows it and insist on running needless CPC's

i=p/u · Feb 17, 2013

well i dont even need the extra core , but any job most of time i notice one tied to it but if i can get 5c which table dosent metion well

salt laden area sea front

Silly Sausage · Feb 17, 2013

i=p/u

I'm coming over to Northern Ireland on tonight's ferry.
My genius and intellect comes cheap at as much Guinness and smokes I can consume each evening after work.
PM me for phone number.

i=p/u · Feb 17, 2013

did you see the prices of tp-n switched fuse

- - - Updated - - -

the guy i got involved wants 1000 a week for pair....

Engineer54 · Feb 17, 2013

i=p/u said:
well i dont even need the extra core , but any job most of time i notice one tied to it but if i can get 5c which cable dosent metion well

salt laden area sea front

Then i would personally run your SWA cable underground in a duct, sealed at both ends with a propriety duct seal compound. And make sure you pull the cable into the duct carefully, any damage to the sheath, will allow the salt laden water to corrode the SWA very quickly!! lol!!