What a manual transfer switch does
A manual transfer switch moves selected household circuits from the utility to a generator with a lever, and keeps the two sources from ever being connected together. It is wired to the main panel by an electrician and fed from the generator through an inlet and a cord.
| Voltage | Maximum watts (amps × volts) | Plan for about 80% continuous |
|---|---|---|
| 120 V | 3,600 W | 2,880 W |
| 240 V | 7,200 W | 5,760 W |
Generators in our catalog with a matching listed outlet
- Westinghouse Outdoor Power WGen3600v Generator - Stationary — 3,600 W running
- A-iPower 4600W Portable Open-Frame Inverter Generator With CO Alert-SUA4600iF — 4,600 W running
- Westinghouse Outdoor Power WGen3600cv Generator — 3,600 W running
- Westinghouse Outdoor Power WGen3600DFv Generator - Dual Fuel — 4,650 W running
- Westinghouse Outdoor Power WGen3600 Generator — 3,600 W running
- Westinghouse Outdoor Power WGen3600c Generator — 3,600 W running
- Westinghouse Outdoor Power iGen2550DFc Inverter Generator - Dual Fuel — 2,300 W running
- Westinghouse Outdoor Power WGen3600DF Generator - Dual Fuel — 4,650 W running
- Westinghouse Outdoor Power WGen5300v Generator — 5,300 W running
- Westinghouse Outdoor Power WGen3600DFc Generator - Dual Fuel — 4,650 W running
A matching outlet is necessary but not sufficient: the generator's watts, the inlet, the cord and the panel all have to be correct. An electrician confirms the whole chain.
Safety and installation
Compare this with other equipment in the transfer switch library or use the compatibility matrix.
Fit check before you buy
This equipment connects to a home's wiring, so every check below belongs to a qualified person.
- ✓Licensed electricianInstallation, permit and inspection are the electrician's and your local authority's job.
- ?Matching amperageThis item is rated 30 A; the generator outlet, cord and inlet need to match.
- ?Panel fitGet $200 off coupon for first registration
- iUtility rulesSome utilities and areas have their own rules for generator connections.
Specifications
Each figure is labelled with where it comes from. Numbered references link to the source list below.
Published specifications
| Type | manual transfer switch[S1] | Manufacturer store |
|---|---|---|
| Amperage | 30 A[S1] | Manufacturer store |
| Compatibility (as stated) | Get $200 off coupon for first registration[S1] | Manufacturer store |
Wattstanding calculations
| Maximum watts at 240 V | 7,200 W | Wattstanding calculation |
|---|---|---|
| Maximum watts at 120 V | 3,600 W | Wattstanding calculation |
Limitations to weigh
- Specifications are the maker's or seller's; Wattstanding has not tested this product and gives no installation instructions.
- Whether it is allowed or suitable for your home is for a licensed electrician and your local authority.
- Prices change; confirm the price, stock and what is included before ordering.
Alternatives worth comparing
Where to buy
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Questions buyers ask
Do I need an electrician to install the Jackery Manual Transfer Switch (120V 30A)?
Where can I buy the Jackery Manual Transfer Switch (120V 30A)?
Sources and verification
- Jackery — Jackery Manual Transfer Switch (120V 30A) — product page and specifications Retrieved 30 Sep 2026
Wattstanding has not tested this product hands-on. This reference is compiled from the sources above; our calculations are labelled and show their working. Electrical work belongs to a licensed electrician. Last verified 30 Sep 2026. How we work