---
title: 30 Floors Up Roblox Power Cut, Breaker and the Day 4 Alarm
description: What happens when the power and water go off in 30 Floors Up, the hallway breaker players flip to stop the day 4 alarm, and how to see in the dark afterwards.
url: https://30floorsupguide.wiki/building/power-and-breaker/
---

Floor 29 · The building

# 30 Floors Up Roblox power cut, breaker and day 4 alarm
The first four days

- D0 **Lights, taps, lifts work**Fill everything

- D1 **Neighbors leave**"While the lift still runs"

- D2 **Warning**Water and power will be cut

- D3 **The cut**Taps dry, lifts stop, nights black

- D4 **Alarm (one report)**If the hallway breaker was left alone

_When the building’s services go, as seen across recordings; exact days vary by run._

**Short answer:** in the first days the building cuts the **water and the power**: the taps stop, the lifts stop and the floors go pitch black at night. You cannot stop the cut. One guide reports a trap on **day 4**: if you leave the **hallway electrical breaker** alone, an emergency alarm goes off and pulls every zombie on the floor to your door, so it flips the breaker as soon as you leave the apartment.

## When does the power go?

The game warns you first. On day 2 a building notice says **water and power supplies will be cut off**. The cut itself came at different points in different runs: one player lost power while looting another apartment, a co-op group saw it on **day 3**, and in another run the lights went out with the message that the elevators had stopped.

What changes after the cut:

| Before | After |
| --- | --- |
| Taps run | Taps stop; only stored and treated water is left ([water](https://30floorsupguide.wiki/survival/water/)) |
| Lifts run (neighbors leave “while the lift still runs”) | Lifts stop; the shafts become routes ([lift shafts](https://30floorsupguide.wiki/building/vents-and-lift-shafts/)) |
| Lit corridors | Pitch black at night; daylight only through windows |
| - | Fridge no longer powered |

Opening the blinds during the day lets light in after the cut.

## What is the day 4 alarm?

One guide (BlaxieBACON, recorded 6 November) describes it: if you leave the hallway electrical breaker alone, a loud emergency alarm goes off on the fourth day and draws every zombie on the floor to your front door, where the narrow entry leaves no room to swing. The advice is to flip the breaker right after you first leave your apartment.

Other recordings back up the part that alarms draw zombies (a player who set one off watched the hallway fill), but we have not seen a second recording of the day 4 alarm itself, so treat the timing as one player’s report. Flipping the breaker early costs nothing.

## How do you see in the dark?

- **Flashlight**: its battery drains (one player was at 68% after a long session). Carry batteries.

- **Lantern** from a cupboard, **headlamp** (one in the apartment next door, another on floor 27) and **candles**.

- **Peephole plus flashlight**: you can shine it through the peephole to check the hallway.

More on each in [backpacks, lights and radio](https://30floorsupguide.wiki/items/backpacks-and-light/#light).

## Equipment rule from the survival book

“Turn equipment off when finished.” Batteries are the one thing that keeps your light working after the cut, so switch the flashlight off in daylight.

## Before-the-cut checklist

Everything here gets harder or impossible once the power goes:

- Fill the tub, every bucket and every bottle; store them on the rack ([water](https://30floorsupguide.wiki/survival/water/)).

- Use the lift while it runs only if you must; neighbors leave by it on day 1.

- Find the flashlight and any batteries in your flat.

- Flip the hallway breaker (one guide’s day 4 tip).

- Locate the toolbox and the triangular key, so you can use the shafts after the lifts stop.

## Is the power ever restored?

Not in any recording up to 8 November. Water comes back through the floor 27 valve, which pumps to the roof tank; nothing suggests the same for electricity, so plan for dark nights for the rest of the run.

## Watch it in 30 Floors Up Roblox

- [Roblox 30 FLOORS UP (Full Guide + Gameplay)](https://www.youtube.com/watch?v=e0Di4W_Pmrw) BlaxieBACON · recorded 6 November 2026 jump to [03:34](https://www.youtube.com/watch?v=e0Di4W_Pmrw&t=214s), [03:54](https://www.youtube.com/watch?v=e0Di4W_Pmrw&t=234s), [04:35](https://www.youtube.com/watch?v=e0Di4W_Pmrw&t=275s)

- [I NEED TO ESCAPE this floor... 30 Floors Up Roblox (Russian)](https://www.youtube.com/watch?v=cUSR_QNigu8) ФОКСИК · recorded 5 November 2026 jump to [05:09](https://www.youtube.com/watch?v=cUSR_QNigu8&t=309s), [07:12](https://www.youtube.com/watch?v=cUSR_QNigu8&t=432s)

- [PLAYING 30 FLOORS UP](https://www.youtube.com/watch?v=6cIE7GXK8DY) STVELAW · recorded 2 November 2026 jump to [29:57](https://www.youtube.com/watch?v=6cIE7GXK8DY&t=1797s)

- [ROBLOX 30 FLOORS UP!](https://www.youtube.com/watch?v=rkgY6Wv8duM) Sandoosky · recorded 3 November 2026 jump to [04:47](https://www.youtube.com/watch?v=rkgY6Wv8duM&t=287s)

Checked 8 November 2026 against recordings from 2–8 November 2026 (Update 1.0) and the official Roblox page. [How this guide checks facts](https://30floorsupguide.wiki/about/#how).

## More The building guides

- [Floor-by-floor list Floor-by-floor list of Bellwether Heights in 30 Floors Up from players’ recordings: your floor 30, Dev on 31, Eli on 29, Arthur on 28, the floor 27 valve, the community kitchen on 19 and the fire on 16.](https://30floorsupguide.wiki/building/floors/)

- [Vents & lift shafts How to open the vents in 30 Floors Up with a screwdriver and wrench, get into the lift shaft with the triangular key or lift landing key, climb the ladders and avoid getting stranded.](https://30floorsupguide.wiki/building/vents-and-lift-shafts/)

- [Rooftop How players reach the roof in 30 Floors Up: the triangular key and lift shaft ladder, the roof key Arthur Hail mentions, the door locked from the roof side and what the rooftop is for.](https://30floorsupguide.wiki/building/rooftop/)