Installer Guide
The Google Nest Cam Outdoor (wired, 2nd gen) runs on a 7.5V DC / 1.5A Class 2 power adapter - and the Versa GNPC-1 delivers that exact OEM-spec output with a cable run of up to 75 ft, an anti-tamper mount, and an ETL listing.
Versa Wireless is a US supplier of professional wireless security sensors and install accessories. The GNPC-1 is our Google Nest Cam power adapter for security pros: a transformer-only 7.5V power supply for the wired Nest Cam models that take a 7.5V DC input, built for the way installers actually wire cameras today.
What Google requires from a Nest Cam power adapter
Google publishes the power requirements for each camera in its Safety & Regulatory Guides, and the numbers are specific. For the Nest Cam Outdoor (wired, 2nd gen), the official Safety & Regulatory Guide lists two approved adapter ratings: Model GPJ15 at 7.5V DC / 1.5A and Model G7LYP at 12V DC / 0.75A. Either way, the AC adapter must be certified as a Limited Power Source (LPS) per IEC 60950-1 and/or classified PS1 per IEC 62368-1, and Google ships the camera with a double-insulated adapter (IEC 60417-5172) that needs no ground connection.
That is the standard any replacement google nest cam power adapter has to meet. In North American terms, the equivalent safety benchmark for a plug-in Class 2 transformer is UL 1310 and CSA C22.2 No. 223 - the standards the GNPC-1 is ETL Listed against by Intertek. A generic brick with the right barrel size but no Class 2 listing is not a professional install; it is a liability on the job ticket.
One more requirement worth quoting: when the adapter is used outdoors, Google says it "must be plugged into an appropriate outdoor rated outlet and receptacle." The cleaner pro solution is to keep the transformer indoors at the outlet and run the cable out to the camera - which is exactly the install pattern the GNPC-1 is built around.
Why pros buy the transformer without the cable
Here is the part of the market that retail listings get wrong. The traditional Nest security camera power kit sold through distribution bundles a 7.5V / 1.5A transformer with a power cable to connect it to the camera. That made sense when the cable had to come from somewhere. Today, Google provides the camera cable to security professionals with the camera hardware, so a kit with a second cable means paying for wire you throw in the truck.
That is why the smart buy is now the transformer alone. The Versa GNPC-1 is built for exactly this scenario - a professional-grade 7.5V nest cam power supply that pairs with the Google-supplied cable. Same application, one less redundant part in the box.
75 ft cable run
The GNPC-1 supports runs up to 75 ft (22.9 m) on 18 AWG conductor - roughly 3x the reach of typical aftermarket adapters. The transformer stays at the outlet; clean, concealed cable reaches the camera at the soffit, ceiling, or wall.
Anti-tamper mounting
An integrated security mounting screw hole anchors the adapter flat to the wall plate, so it cannot be unplugged or walked off on a commercial job - the detail that separates a pro power install from a consumer one.
Protected output
Automatic short-circuit protection shuts the output down on a fault and self-recovers once the fault clears. NTC temperature components limit inrush current and prevent overheating. No truck roll to reset a brick.
GNPC-1 specifications
All physical and electrical specs below come from the GNPC-1 technical data sheet, the source of truth for the product (also downloadable on the GNPC-1 product page).
| Spec | GNPC-1 |
|---|---|
| Input | 100-240V AC, 50/60Hz, 0.5A (universal input) |
| Output | 7.5V DC, 1.5A |
| Class | Class 2 power supply |
| Application | Replacement power transformer for wired Google Nest Cam models requiring 7.5V DC input |
| Cable run | Up to 75 ft (22.9 m) on 18 AWG conductor |
| Plug type | Two-prong NEMA 1-15P |
| Mounting | Integrated security (anti-tamper) mounting screw hole |
| Short-circuit protection | Automatic shutdown on output fault, self-recovering |
| Temperature protection | NTC inrush limiting and overheat prevention |
| Dimensions | 1.71" x 1.15" x 3.75" |
| Use | Indoor only - residential and commercial |
| Safety listing | ETL Listed by Intertek - UL 1310, CSA C22.2 No. 223 |
What to look for in a replacement transformer
If you are standardizing a nest camera power adapter replacement across jobs, three documented specs matter - they are the things an AHJ or a commercial client will actually ask about:
- A published run rating. The GNPC-1 documents up to 75 ft on 18 AWG, so you can plan the outlet-to-camera route on paper before the ladder comes off the truck.
- An anti-tamper mount. The integrated security screw hole anchors the GNPC-1 to the wall plate - camera power that cannot be defeated by pulling a plug.
- A published safety listing. ETL Listed by Intertek to UL 1310 and CSA C22.2 No. 223, matching the Class 2 / LPS-class requirement in Google's own documentation.
Planning the power run
Google's official install guide for the Nest Cam Outdoor (wired, 2nd gen) describes two routes: run the nest cam outdoor power cable to an outdoor outlet, or bring it through a vent or drilled hole to an indoor outlet. For pro installs, the indoor route wins almost every time:
- Keep the transformer indoors. The GNPC-1 is an indoor-rated Class 2 unit, so it sits at the interior outlet - no outdoor-rated receptacle or in-use cover needed at the camera end.
- Use the run budget. A 75 ft rating on 18 AWG means the outlet does not have to be near the camera. Basement outlet to a second-story soffit is in budget; typical consumer adapters give you around a third of that reach.
- Anchor the adapter. Drive the security screw through the mounting hole into the wall plate on commercial work, so the camera power cannot be defeated by unplugging a brick.
- Dress the cable. Google's guide recommends cable clips, a bit of slack at the camera, and painting the run to blend with the structure.
Full documentation: GNPC-1 datasheet.
Frequently asked questions
What power adapter does the Google Nest Cam Outdoor (wired, 2nd gen) use?
Google's Safety & Regulatory Guide approves two adapter ratings for the Nest Cam Outdoor (wired, 2nd gen): model GPJ15 at 7.5V DC / 1.5A and model G7LYP at 12V DC / 0.75A. The adapter must be a Limited Power Source per IEC 60950-1 and/or PS1-classified per IEC 62368-1. The Versa GNPC-1 matches the 7.5V DC / 1.5A rating as a Class 2, ETL Listed transformer.
Can I use a third-party power supply with a Google Nest Cam?
Yes, if it matches the rating and safety class Google publishes. For wired Nest Cam models that means a 7.5V DC / 1.5A Class 2 (LPS-class) supply. The GNPC-1 is a 7.5V DC / 1.5A Class 2 nest cam power supply, ETL Listed to UL 1310 and CSA C22.2 No. 223 - pair it with the Google-supplied cable for your camera model.
Do I still need a Nest security camera power kit with a bundled cable?
Just the transformer. Google now provides the camera cable to security professionals with the camera hardware, so a kit's bundled cable is redundant on pro jobs. A transformer-only unit like the Versa GNPC-1 covers the power side with a documented 75 ft / 18 AWG run rating, an anti-tamper screw mount, and an ETL listing.
How far can you run a Nest Cam power cable?
With the GNPC-1, up to 75 ft (22.9 m) on 18 AWG conductor - roughly 3x the reach of typical aftermarket adapters. That lets the transformer sit at a convenient indoor outlet while concealed cable runs to the camera position.
Which Google Nest Cam models does the GNPC-1 power?
The GNPC-1 is built for wired Google Nest Cam installs. It matches the 7.5V DC / 1.5A rating Google publishes for its GPJ15 adapter on the Nest Cam Outdoor (wired, 2nd gen), and Google provides the matching camera cable to security professionals for each Nest Cam model - one transformer SKU covers the wired camera jobs on your truck.
Can Nest cameras be hardwired for continuous power?
The wired models are continuous-power by design - the Nest Cam Outdoor (wired, 2nd gen) runs on its 7.5V or 12V adapter full time, which is what enables 24/7 recording. Battery models charge intermittently instead. For always-on camera power on pro installs, pair the wired camera, the Google-supplied cable, and a Class 2 transformer like the GNPC-1.
The GNPC-1 is stocked for dealers through WAVE Electronics, alongside Versa install accessories. Dealer pricing on the product page.
Sources: Google Safety & Regulatory Guide for Nest Cam Outdoor (wired, 2nd gen); Google Nest Cam Outdoor (wired, 2nd gen) installation guide; Google Safety & Regulatory Guide for Nest Cam Indoor (wired, 3rd gen); Versa GNPC-1 technical data sheet. Questions about a specific install? Talk to Versa.
