HDBC-HARD DRAWN BARE COPPER CONDUCTOR

Hard drawn bare copper are concentrically stranded and wrapped helically around a central wire. Each successive layer has six wires more than the previous underlying layer. Outer layer is right or left hand lay and reversed in successive layers

Mesa 1 BS Standard

Nominal area of cross-section of stranded conductor mm2	Construction (stranding and wire diameter) number/mm	Geral diameter of conductor (approx.) milímetro	Nominal mass per unit length kg/km	Resistência a 20°C		Minimum breaking load N
Nominal area of cross-section of stranded conductor mm2	Construction (stranding and wire diameter) number/mm	Geral diameter of conductor (approx.) milímetro	Nominal mass per unit length kg/km	Nominal /km	Max. /km	Minimum breaking load N
10	7/1.35	4.05	89.82	1.788	1.829	3752
14	7/1.60	4.8	126.2	1.273	1.303	5267
16	3/2.65	5.7	148.3	1.082	1.106	6194
16	7/1.70	5.1	142.4	1.128	1.154	5946
25	7/2.10	6.3	217.3	0.7391	0.7563	9073
32	3/3.75	8.06	296.9	0.5405	0.552	12400
32	7/2.46	7.38	298.2	0.5386	0.5497	12442
35	7/2.50	7.5	308	0.5215	0.5337	12860
50	7/3.00	9	443.5	0.3622	0.3706	18520
50	19/1.80	9	435.8	0.3727	0.3819	17700
70	7/3.55	10.65	621.1	0.2586	0.2646	25930
70	19/2.10	10.5	593.2	0.2738	0.2806	24090
95	19/2.50	12.5	840.7	0.1932	0.198	34140
100	7/4.30	12.9	911.2	0.1763	0.181	36540
120	19/2.80	14	1055	0.154	0.1578	42830
125	19/2.90	14.5	1131	0.1436	0.1471	45940
150	19/3.20	16	1377	0.118	0.1208	55940
150	37/2.25	15.75	1334	0.1233	0.1264	53880
185	19/3.55	17.75	1695	0.09582	0.09815	68860
185	37/2.50	17.5	1647	0.09981	0.1024	66490

Mesa 2 AS/NZS Standard

Number of stranding	Wire diameter mm	Aprox. overall diameter mm	Cross-sectional area mm2	Mass per km kg	Calculated breaking load kN	Equivalent aluminium area mm2	DC resistance km at 20℃
7	1.00	3.00	5.498	49.3	2.32	8.68	3.25
7	1.25	3.75	8.589	76.9	3.59	13.6	2.09
7	1.75	5.25	16.84	151	6.89	26.6	1.06
7	2.00	6.00	21.99	197	8.89	34.7	0.815
7	2.75	8.25	41.58	375	16.2	65.3	0.433
19	1.75	8.75	45.7	413	18.3	71.7	0.395
19	2.00	10.00	59.7	538	23.6	93.6	0.303
7	3.50	10.50	67.35	607	25.4	106	0.268
7	3.75	11.30	77.28	696	28.8	121	0.233
37	1.75	12.30	88.99	806	35.6	139	0.203
19	2.75	13.80	112.9	1020	43.1	177	0.160
19	3.00	15.00	134.3	1210	50.8	211	0.134
37	2.50	17.50	181.6	1640	70.3	284	0.0996
37	2.75	19.30	219.8	1990	83.9	344	0.0826
37	3.00	21.00	261.6	2370	98.9	409	0.0691
61	2.75	24.80	362.3	3290	138	566	0.5000