HD 361 Cable Code Designation

Table 2 — Relationship to Standards

Symbol	Relationship of cable to standards
H	Cable conforming with harmonized standards
–	Non-harmonized cable

National Committees may use any symbol or system that does not conflict with HD 361. If the system laid down by HD 361 is used for non-harmonized cables, it is recommended not to use a prefix symbol.

Table 3 — Rated Voltage

Symbol	Value U₀/U
01	100/100 V
03	300/300 V
05	300/500 V
07	450/750 V
1	1000/1000 V a)

^a) At present, the rated voltage is limited to PV-cables acc. to EN 50618.

Table 4 — Insulating and Non-Metallic Sheathing Materials

Symbol	Material
B	Ethylene-propylene rubber for conductor temperature 90°C
G	Ethylene-vinyl-acetate
J	Glass-fibre braid
M	Mineral
N	Polychloroprene-rubber (or equivalent material)
N2	Special-rubber compound of polychloroprene for sheathing of welding cable
N4	Chlorosulphonated polyethylene
N8	Special-rubber compound of polychloroprene, water resistant
Q	Polyurethane
Q4	Polyimide
R	Ethylene-propylene or equivalent synthetic rubber for conductor temperature 60°C
S	Silicone-rubber
T	Textile braid, impregnated or not, on assembled cores
T6	Textile braid, impregnated or not, on individual cores of a multicore cable
V	Ordinary PVC
V2	PVC compound for conductor temperature of 90°C
V3	Ordinary PVC, for low temperature operating
V4	Ordinary PVC, crosslinked
V5	Ordinary PVC, special oil resistant
Z	Crosslinked polyolefin-compound for cable with low smoke and non-corrosive gases in the case of fire
Z1	Thermoplastic polyolefin-compound for cable with low smoke and non-corrosive gases in the case of fire
Z2	Crosslinked polyolefin-compound for cable with low smoke and non-corrosive gases in the case of fire for photovoltaic cable
Z5	Thermoplastic compound EVM-1 for cable with non-corrosive gases in the case of fire for EV charging cable
Z6	Crosslinked compound EVM-2 for cable with non-corrosive gases in the case of fire for EV charging cable

Table 5 — Metallic Coverings

Symbol	Sheath, - concentric conductors and screens
C	Concentric copper conductor
C4	Copper braid over assembled cores

The symbols in Table 6, when required, are to follow the symbols selected from any of the previous Table 4 and Table 5.

Table 6 — Special Constructional Components of a Cable

Symbol	Constructional Components
D3	Strain-bearing element consisting of one or more components (textile or metallic), placed at the centre of a round cable or distributed inside a flat cable
D5	Central heart (non-strain-bearing)

The symbols of Table 7, when required, are to follow the symbols selected from any of the previous Tables 4 to 6.

Table 7 — Special Construction of Cable

Symbol	Special Construction
No Symbol	Round cable construction
H	Flat construction of "divisible" cables and cores, either sheathed or non-sheathed
H2	Flat construction of "non-divisible" cables and cores
H6	Flat cable having 3 or more cores, according to EN 50214
H8	Cables with extruded double layer insulation
H18	Coiled cable

The symbols of Table 8, when required, are to follow the symbols selected from any of the previous Tables 4 to 7.

Table 8 — Conductor Material

Symbol	Conductor Material
No symbol	Copper
-A	Aluminium

The symbols of Table 9 are to follow, after a dash (already included in the symbol -A, in the case of aluminium conductors) the symbols selected from any of the previous Tables 4 to 8.

For cables containing two forms of conductors, the symbol shall designate the form of the phase conductor only.

Table 9 — Conductor Form

Symbol	Conductor Form
-D	Flexible conductor of welding cables (flexibility departing from EN 60228 class 5)
-E	Highly flexible conductor of welding cables (flexibility departing from EN 60228 class 6)
-F	Flexible conductor of a flexible cable or cord (flexibility according to EN 60228 class 5)
-H	Highly flexible conductor of a flexible cable or cord (flexibility according to EN 60228 class 6)
-K	Flexible conductor of a cable for fixed installations (unless otherwise specified, flexibility according to EN 60228 class 5)
-R	Rigid, round conductor, stranded
-U	Rigid, round conductor, solid
-Y	Tinsel conductor

7. Part 3 of the Designation
Part 3 of the designation, which is optional, covers the number and size of the conductors (Table 10).

Table 10 — Number(s) of Cores and Nominal Cross-Section(s) of Conductors

Symbol	Number and Size of Conductors
(number)	Number, n, of cores
Xᵇ	Times, where a green/yellow core is not included
G	Times, where a green/yellow core is included
(number) a	Nominal cross-section, s, of conductor in mm²
Y	For a tinsel conductor where the cross-section is not specified

^a Countries are free to assign the symbol "N" (placed after the conductor cross-section) to indicate that the cores are identified by numbers. 
^b Only capital letter shall be used.

General Examples:

Notation	Explanation
n X s or n G s	n cores of s mm² conductor cross-section
n₁ X s₁ + n₂ X s₂	n₁ cores of s₁ mm² conductor cross-section + n₂ cores of s₂ mm² conductor cross-section
n X s₁/s₂	n cores of s₁ mm² conductor cross-section and concentric conductor of s₂ mm² conductor cross-section
n₁ X s₁ + n₂ X s₂/s₃	n₁ cores of s₁ mm² conductor cross-section + n₂ cores of s₂ mm² conductor cross-section and concentric conductor of s₃ mm² conductor cross-section

Particular Examples:

Notation	Explanation
4 G 50	A cable with four cores having 50 mm² conductor cross-section, one of the cores being green/yellow
4 X 50	A 4-core cable without green/yellow, all the cores having 50 mm² conductor cross-section
3 X 50 + 1G25	A cable with 4 cores, 3 cores which have 50 mm² conductor cross-section and the green/yellow core has a reduced conductor cross-section of 25 mm²
3 X 70/35	A cable with 3 cores having 70 mm² conductor cross-section and a concentric conductor of 35 mm² cross-section
2 X Y	A 2-core cord with tinsel conductors