What size power station for a wet/dry shop vacuum?
It needs a station with at least 1,200 W of continuous output (starting watts not published, so the check uses running watts). At the default 85% efficiency it takes about 706 Wh of rated capacity for its typical 30 min a day, and 1,412 Wh for 1 hour of use. 43 of the 54 power stations in the Enough Watts data set can power it. The smallest one that keeps it going for 1 hour of use is the Goal Zero Yeti 1500 (1,505 Wh).
Updated
The short answer
1,200W
Continuous output
Not published
Surge to start it
706Wh
Capacity for its typical 30 min a day
1,412Wh
Capacity for 1 hour of use
43 of 54
Stations that power it
Watts
Typical figures for this type, from the sources at the foot of this page. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
- Running, typical
- 1,200 W
- Running, low to high
- 900 W to 1,440 W
- Starting
- Not publishedmotors often need 2 to 3 times their running watts to start
- Typical use a day
- 30 minhours the motor actually runs
- Average draw while on
- 1,200 W
- Voltage
- 120 V
- Assumes the motor runs the whole time; real use is often less.
- Starting watts not published; motors often need 2 to 3 times their running watts to start.
Explained in: Watts vs watt hours, explained, How to read an appliance label for watts and Starting watts explained.
The math
Worked with the typical figure, as the calculator does it.
- Output1,200 W running, so the station's continuous output must be at least 1,200 W.
- SurgeStarting watts are not published, so the surge check uses the 1,200 W running figure.
- Average draw1,200 W: the running watts count for every hour it is on, as if the motor never paused.
- A typical day1,200 W × 30 min = 600 Wh a day.
- Typical 30 min a day1,200 W × 30 min = 600 Wh usable, ÷ 0.85 = 706 Wh of rated capacity.
- 1 hour of use1,200 W × 1 h = 1,200 Wh usable, ÷ 0.85 = 1,412 Wh of rated capacity.
- On the Goal Zero Yeti 15001,505 Wh × 0.85 = 1,279 Wh usable, ÷ 1,200 W = 1.1 h of use.
Stations that run it
Every power station in the data with this appliance alone plugged in, at 85% efficiency. Type the running watts from your own label and the table works it out again.
What moves the number
A larger tank usually means a larger motor: 900 W to 1,440 W across the sizes in our sources, the top figure for a 16 gallon vac. No start figure is published, so the surge check uses the running watts.
Questions
How many watts does a wet/dry shop vacuum use?
Can a portable power station run a wet/dry shop vacuum?
How long will a power station run a wet/dry shop vacuum?
Does a wet/dry shop vacuum need extra watts to start?
Sources
Researched from these pages, then checked against them a second time.
- Generator Wattage Worksheet (Generac) generator maker guide, checked
- 12 Gallon NXT Wet/Dry Vac | RIDGID Tools maker product page, checked
- 16 Gallon NXT Wet/Dry Vac with Detachable Blower | RIDGID Tools maker product page, checked
- RT0600 6 Gallon NXT Wet/Dry Vac | RIDGID Tools maker product page, checked
We read published figures and do the math; we do not measure appliances. The methodology states every formula on this page. Capacities are rated watt hours: 1,000 Wh rated gives 850 Wh usable at the default.