air purifier · 45W
0.19A
North America 240 V · 30 A
air purifier, 45 W — 0.19 A on a 240 V / 30 A circuit
45 W divided by 240 V is 0.19 A. This circuit allows 24 A continuously, so 128 of them can run together.
This circuit handles it
Fine on a power strip
- Power draw
- 45 W
- Voltage
- 240 V
- Breaker
- 30 A
- Current that flows
- 0.19 A
- Limit for continuous use
- 24 A
- How many fit at once
- 128
- Wire it needs
- AWG 24
- Two hours a day, per month
- 2.7 kWh
Continuous loads get eight tenths
A breaker does not trip the instant you reach its rating — it holds for a long while first, and the wire warms up in the meantime. So a load running more than three hours is planned to eight tenths of the breaker. On a 16 A breaker that is 12.8 A.
Nearby cells
Same appliance, other circuits
Same circuit, other appliances
air purifier
0.19A · 128
laptop
0.27A · 88
fan
0.33A · 72
TV
0.5A · 48
fridge
0.63A · 38
heated blanket
0.83A · 28
game console
0.92A · 26
desktop PC
1.46A · 16
washing machine
2.08A · 11
toaster
3.75A · 6
rice cooker
4.58A · 5
microwave
5A · 4
coffee machine
5.83A · 4
iron
6.25A · 3
hair dryer
6.67A · 3
vacuum cleaner
7.08A · 3
air conditioner
7.5A · 3
electric kettle
8.33A · 2
space heater
9.17A · 2
induction hob
12.5A · 1
How to read this
- Current is the power draw divided by the voltage — a different country gives a different answer.
- The number that fits at once is eight tenths of the breaker divided by that current.
- A power strip stops at 15 A. A bigger breaker does not help; the strip is the ceiling.
- The wire gauge is taken straight from the wire pages.
Frequently asked questions
Q. How many amps does a air purifier draw?
45 W over 240 V is 0.19 A.
Q. How many fit on this circuit?
128. Eight tenths of the 30 A breaker is 24 A, divided by 0.19 A.
Q. Is a power strip fine?
Yes — it stays within the 15 A a common strip holds.
Q. What wire does it need?
AWG 24 carries this current comfortably. Two hours a day comes to 2.7 kWh a month.