Generator Input Plug + Interlock Kit — 30 Amp
A 30 amp generator inlet box plus the matching interlock kit for your panel, so a power station can run whole circuits in a blackout.
The inlet box and interlock kit must be installed by a licensed electrician, so an Electrician Visit is added to your cart with this kit. We'll confirm your panel and schedule the install before any work begins.
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Backup power for whole circuits
Everything you need to safely power your home's circuits from a portable power station or generator during a blackout: a weatherproof generator input plug (power inlet box) plus the matching generator interlock kit for your electrical panel. The two are sold together because an inlet box must never be used without an interlock or transfer switch.
Why you need it with plug-in solar
Grid-tied microinverters like the APsystems EZ1 are required to shut off when the grid goes down, so your panels stop powering the house during an outage. A portable power station charged by the sun can take over. This kit connects it to your electrical panel so it can run your critical loads: fridge, lights, internet, medical devices. Our guide Plug-in solar shuts off in a blackout: here's how to keep your lights on walks through the whole backup plan.
What's included
- Generator input plug: weatherproof outdoor power inlet box with hinged cover and a 30 A male twist-lock inlet
- Generator interlock kit: a sliding plate for your breaker panel that physically keeps the main breaker off while backup power is on, so your home is never connected to the grid and the backup source at the same time
Choose your options
- Inlet type: L14-30 (4-prong, 120/240 V) for power stations or generators with a 30 A L14-30 output, which can feed both sides of your panel. L5-30 (3-prong, 120 V) for power stations with a 120 V 30 A L5-30 output (or TT-30 with an adapter cord).
- Electrical panel brand: interlock kits are made for specific panels. Pick your panel's brand (it's on the label inside the panel door), or choose Not sure and we'll confirm the right kit with you before shipping.
Why the interlock is required
Without an interlock or transfer switch, backup power can flow out onto the utility lines, where it can electrocute line workers, and damage your equipment when the grid comes back. The National Electrical Code requires one. That's why we only sell the input plug together with an interlock kit. Never back-feed a house through a regular outlet with a double-ended cord.
Professional installation required
The inlet box and interlock kit must be installed by a licensed electrician. Book an electrician with InCharge Solar, or add an Electrician Visit to your order, and we'll install both for you. Some older or less common panels may need a transfer switch instead; we'll let you know before any work begins.
Connecting cord sold separately.
Shop more home battery backup.
Local delivery & install
We deliver and install across our California service area.
Licensed electricians
Meter installs, dedicated circuits and breakers. Learn more
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We'll help you plan it
Tell us about your space and your power bill, and we'll recommend the right kit, panels and backup setup for your home.