space heater · 2200W
22A
Japan 100 V · 15 A
space heater, 2200 W — 22 A on a 100 V / 15 A circuit
2200 W divided by 100 V is 22 A. This circuit allows 12 A continuously, so 0 of them can run together.
Too much for this circuit alone
Plug it straight into the wall
- Power draw
- 2200 W
- Voltage
- 100 V
- Breaker
- 15 A
- Current that flows
- 22 A
- Limit for continuous use
- 12 A
- How many fit at once
- 0
- Wire it needs
- 4mm²
- Two hours a day, per month
- 132 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
0.45A · 26
laptop
0.65A · 18
fan
0.8A · 15
TV
1.2A · 10
fridge
1.5A · 8
heated blanket
2A · 6
game console
2.2A · 5
desktop PC
3.5A · 3
washing machine
5A · 2
toaster
9A · 1
rice cooker
11A · 1
microwave
12A · 1
coffee machine
14A · 0
iron
15A · 0
hair dryer
16A · 0
vacuum cleaner
17A · 0
air conditioner
18A · 0
electric kettle
20A · 0
space heater
22A · 0
induction hob
30A · 0
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 space heater draw?
2200 W over 100 V is 22 A.
Q. How many fit on this circuit?
0. Eight tenths of the 15 A breaker is 12 A, divided by 22 A.
Q. Is a power strip fine?
No. It passes 15 A, so plug it straight into the wall.
Q. What wire does it need?
4mm² carries this current comfortably. Two hours a day comes to 132 kWh a month.