AS/NZS 3000:2018

Table C1

Maximum demand, single and multiple domestic installations

The maximum demand tool reads the demand rule for each load group in a domestic installation, for one dwelling or for a block of living units. The EV charger tool reads group (j)(iv).

Verified: read against the printed standard, pages 458–461. Checked 19 Sept 2026.

Units: Current A, Power kW

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

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21 rows

Table C1, Maximum demand, single and multiple domestic installations
Group	Unit	Single method	Single first	Single first A	Single then per	Single then A	Units min	Units max	Units method	Units base A	Units per unit A	Single percent	Single fixed A	Units fixed A	Units percent	Single ladder	Units ladder	Units first	Units first A	Units then per	Units then A	Units cap
A(i)	points	first-then	20	3	20	2	2	5	per-unit	6	0
A(i)							6	20	per-unit	5	0.25
A(i)							21		per-unit	0	0.5
A(ii)	kW	percent										75
B(i)	points	first-then	20	10	20	5	2	5	per-unit	10	5
B(i)							6	20	per-unit	15	3.75
B(i)							21		per-unit	50	1.9
B(ii)	A	fixed					2	5	fixed				10	10
B(ii)							6	20	fixed					10
B(ii)							21		fixed					10
B(iii)	A	fixed					2	5	fixed				15	15
B(iii)							6	20	fixed					15
B(iii)							21		fixed					15
C	kW	percent					2	5	per-unit	15	0	50
C							6	20	per-unit	0	2.8
C							21		per-unit	0	2.8
D	kW	percent					2	5	percent			75			75
D							6	20	percent						75
D							21		percent						75
E	kW	percent					2	5	per-unit	0	6	33.3
E							6	20	per-unit	0	6
E							21		per-unit	100	0.8
F	kW	percent					2	5	per-unit	0	6	100
F							6	20	per-unit	0	6
F							21		per-unit	100	0.8
G(spa)	kW	ladder					2	5	ladder							75, 25	75, 25
G(spa)							6	20	ladder								75, 25
G(spa)							21		ladder								75, 25
G(pool)	kW	ladder					2	5	ladder							75, 25	75, 25
G(pool)							6	20	ladder								75, 25
G(pool)							21		ladder								75, 25
H	kW						2	5	percent						100
H							6	20	percent						100
H							21		percent						100
I	points						2	5	first-then									0	0	1	2	15
I							6	20	first-then									0	0	1	2	15
I							21		first-then									0	0	1	2	15
J(i)	kW						2	5	percent						50
J(i)							6	20	percent						50
J(i)							21		percent						50
J(ii)	kW						2	5	percent						75
J(ii)							6	20	percent						75
J(ii)							21		percent						75
J(iii)(spa)	kW						2	5	ladder								75, 25
J(iii)(spa)							6	20	ladder								75, 25
J(iii)(spa)							21		ladder								75, 25
J(iii)(pool)	kW						2	5	ladder								75, 25
J(iii)(pool)							6	20	ladder								75, 25
J(iii)(pool)							21		ladder								75, 25
J(iv)	kW	percent					2	5	percent			100			100
J(iv)							6	20	percent						90
J(iv)							21		percent						75
K	A	ladder					2	5	ladder							125, 75, 50	125, 75, 50
K							6	20	ladder								125, 75, 50
K							21		ladder								125, 75, 50
L	A	ladder					2	5	ladder							100, 50	100, 50
L							6	20	ladder								100, 50
L							21		ladder								100, 50
M	A	assess					2	5	assess
M							6	20	assess
M							21		assess

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Loads

Power

Solar

Safety

Earthing

Testing

Fire

Regulatory

Table C1

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