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A. Core Identification Method :

• 1	2	3	4	5
  Type No.	Voltage Designation, KV
  	≤1.1/1.1		≥3.3/3.3
  	Power Cores	Covered Conductor(S)	Power Cores	Covered Conductor
  209	(a) or (b) or (d)	(a)	(a) or (c) or (d)	(a)
  210	(a) or (b) or (d)	(a)	-	-
  240	(a) or (b) or (d)	(a) and (b)*	(a) or (c) or (d)	(a) and (b)*
  241 and 245	(a) or (e)	(a)	(a) or (e)	(a)
  260	(a) or (b) or (d)	(a) and (b)*	(a) or (c) or (d)	(a) and (b)*
  275	(a)	(a)	-	-
  409	(a) or (b) or (d)	(a)	(a) or (c) or (d)	(a)
  412	(a) or (b)	(a) or (b)	-	-
  440	(a) or (b) or (d)	(a)	(a) or (c) or (d)	(a) or (b)
  441	(a) or (e)	-	(a) or (e)	(a)
  450	-	-	(c) or (d) or (f)	(a)
  455	-		(e)	(a)

• (a): colour-coded insulation or covering.
• (b): colour-coded or continuously numbered proofed tape over the insulation or covering.
• (c): colour-coded or continuously numbered semiconductive tape over the insulation.
• (d): colour-coded yarn in composite screen.
• (e): Type 441 and 455----colour-coded or numbered semiconductive elastomer insulation screen, identifiable at intervals not greater than 300mm.
• (f): Type 450----colour-coded or numbered semiconductive tape over the composite screen.
• *: Grey or white tape may be used.

B. Identification And Rotational Sequence :

• Type No.	Rotational sequence of core colours
  209*	Red, White, Blue
  210*	Red, White, Blue
  240	Red, Grey, White, Grey, Blue, Grey
  241*	Red, Black, White, Black, Blue, Black**
  245***	Red, Black, White, Black, Blue, Black**
  260	Red, Grey, White, Grey, Blue, Grey
  275*	Red, Black, White, Black, Blue, Black**
  409	Red, White, Blue. The central pilot core is grey
  412	Red, Green/Yellow, White, Green/Yellow, Blue, Green/Yellow
  440	Red, Grey, White, Grey, Blue, Grey
  441**	Red, Black, White, Black, Blue, Black. The central pilot core is grey
  450**	Red, Black, White, Black, Blue, Grey
  455	Red, Black, White, Black, Blue, Grey

• *The central pilot conductor insulation in all cases is coloured grey.
• **The earth conductors (Type 241, 245, 275, 441 and 450) are covered with semiconductive elastomer which is inherently black; it is not possible to assign the normal (green/yellow) earth colour identification to these conductors.
• ***The central pilot/control conductor insulation are coloured grey and numbered 1, 2 and 3.