AS/NZS 3012:2019

Table 1

Maximum cord and cable lengths for construction sites

The site cord length tool reads the length limit for the rated current and conductor size. Each row gives four figures: general or specific use, each as a single phase and a three phase length.

Verified: read against the printed standard, pages 24. Checked 1 Oct 2026.

Units: Rated current A A, Csa mm 2 mm2, General single M m, General three M m, Specific single M m, Specific three M m

These are the values AmpSize encodes. No text of the standard is reproduced. Verify against the current standard.

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Find a row

13 rows

Table 1, Maximum cord and cable lengths for construction sites
Rated current A	Csa mm 2 (mm2)	General single M (m)	General three M (m)	Specific single M (m)	Specific three M (m)
10	1	25	50	15	30
10	1.5	35	70	20	40
10	2.5	60	120	35	70
10	4	100	200	60	120
15	1.5	25	50	15	30
15	2.5	40	80	25	50
15	4	65	130	40	80
15	6	100	200	60	120
15	10	170	340	100	200
20	2.5	30	60	20	40
20	4	50	100	30	60
20	6	75	150	45	90
20	10	130	260	75	150

Tools that read it (1)

Site Cord Length

Cables

Protection

Loads

Power

Solar

Safety

Earthing

Testing

Fire

Regulatory

Table 1

Tools that read it (1)

Rated current A	Csa mm 2 (mm2)	General single M (m)	General three M (m)	Specific single M (m)	Specific three M (m)
10	1	25	50	15	30
10	1.5	35	70	20	40
10	2.5	60	120	35	70
10	4	100	200	60	120
15	1.5	25	50	15	30
15	2.5	40	80	25	50
15	4	65	130	40	80
15	6	100	200	60	120
15	10	170	340	100	200
20	2.5	30	60	20	40
20	4	50	100	30	60
20	6	75	150	45	90
20	10	130	260	75	150

Rated current A	Csa mm 2 (mm2)	General single M (m)	General three M (m)	Specific single M (m)	Specific three M (m)
10	1	25	50	15	30
10	1.5	35	70	20	40
10	2.5	60	120	35	70
10	4	100	200	60	120
15	1.5	25	50	15	30
15	2.5	40	80	25	50
15	4	65	130	40	80
15	6	100	200	60	120
15	10	170	340	100	200
20	2.5	30	60	20	40
20	4	50	100	30	60
20	6	75	150	45	90
20	10	130	260	75	150

Rated current A	Csa mm 2 (mm2)	General single M (m)	General three M (m)	Specific single M (m)	Specific three M (m)
10	1	25	50	15	30
10	1.5	35	70	20	40
10	2.5	60	120	35	70
10	4	100	200	60	120
15	1.5	25	50	15	30
15	2.5	40	80	25	50
15	4	65	130	40	80
15	6	100	200	60	120
15	10	170	340	100	200
20	2.5	30	60	20	40
20	4	50	100	30	60
20	6	75	150	45	90
20	10	130	260	75	150