AS/NZS 3008.1.1:2017

Table 52, 53, 54, 55

Short-circuit K values and temperature limits

The fault rating tool reads the conductor temperature limits for the adiabatic check from AmpSize's short-circuit limits table. It also reads the k factor from the same table. The values print the same as the New Zealand part.

Verified: read against the printed standard, pages 121–123. Checked 20 Sept 2026.

Units: K A*s^0.5/mm2, Initial temp C degC, Final temp C degC, Max size mm 2 mm2

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

Back to its card on the AS/NZS 3008.1.1:2017 page

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43 rows

Table 52, 53, 54, 55, Short-circuit K values and temperature limits
Kind	Material	Initial temp C (degC)	Final temp C (degC)	K (A*s^0.5/mm2)	Insulation class	Max size mm 2 (mm2)	Joint
k	Cu	110	140	65.3
k	Cu	110	150	74.9
k	Cu	110	160	83.2
k	Cu	110	220	119
k	Cu	110	250	132
k	Cu	110	350	164
k	Cu	90	140	85.6
k	Cu	90	150	93.1
k	Cu	90	160	99.9
k	Cu	90	220	131
k	Cu	90	250	143
k	Cu	90	350	173
k	Cu	75	140	98.7
k	Cu	75	150	105
k	Cu	75	160	111
k	Cu	75	220	140
k	Cu	75	250	151
k	Cu	75	350	180
k	Al	110	140	43.2
k	Al	110	150	49.5
k	Al	110	160	55
k	Al	110	250	87.1
k	Al	90	140	56.6
k	Al	90	150	61.5
k	Al	90	160	66
k	Al	90	250	94.5
k	Al	75	140	65.2
k	Al	75	150	69.6
k	Al	75	160	73.6
k	Al	75	250	99.9
insulation		75	160		thermoplastic-75	300
insulation		75	140		thermoplastic-75
insulation		90	250		cross-linked-90
insulation		110	250		cross-linked-110
joint			250				exothermic-welded
joint			160				soldered
joint			250				compression
sheath	thermoplastic		200
sheath	polyethylene		150
sheath	high-density-polyethylene		180
sheath	polychloroprene-or-csp		200
sheath	lead		170
sheath	lead-alloy		200

Cables

Protection

Loads

Power

Solar

Safety

Earthing

Testing

Fire

Regulatory

Table 52, 53, 54, 55

Tools that read it (4)