Questions tagged [smoke-detectors]

Device for detecting smoke and/or fire.

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Smoke detector replacement

I am looking at a house to buy and after seeing it the owner stated he wired the smoke detectors with 14/2 instead of 14/3 if I buy the house could I replace them with battery only and can they still ...
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How do you properly shield a 10-year lithium battery smoke detector from an old wired system?

Short version: I would like to hang smoke detectors with 10-year lithium batteries over the junction boxes that were once used for a wired system. The wires in the boxes no longer carry any current. ...
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Smoke Detector Turns on Randomly: After removing Popcorn ceiling and repainting

I removed the popcorn ceiling and repainted the ceilings at my place. The drywall contractors forgot to cover the smoke detector. Obviously there was popcorn ceiling leftover, dust, slight moisture. ...
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Can two branch circuits share one lighting box?

All my smoke detectors are on one circuit, but one needs to be moved about 4 feet from where it is. At its present location is where I would like to have a light fixture which will be on a different ...
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Are there smoke alarms that you can connect 12v-24v strobe to for remote notification? [closed]

Are there smoke alarms that you can connect 12v-24v strobe to for remote notification ?
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1 answer
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Installing Nest Smoke Alarm against capped wires

We moved in to a new home and the prior homeowner capped the old smoke alarm wires and replaced the old wired alarm with a battery unit that wasn’t wired up at all. The nest smoke alarm has a 120V ...
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I found this white electronic device on my ceiling. What is it?

I found this on my ceiling and I was wondering what it is.
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What if anything does blue tape mean on a wire for a smoke alarm circuit?

Is there a common meaning amongst electricians for blue electrical tape on a circuit that powers the smoke alarms in a house?
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Removing fire detection panel

We recently moved into a house which used to be tenanted to five adults, and because of safety regs had to have very comprehensive fire safety. There is a fire panel, and there are fire alarm push ...
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Will essential oil diffuser trigger the smoke detector? [closed]

I saw many posts online saying that the essential oil diffuser will not set up the smoke detector. However, there were actually some posts online saying that its diffuser sets off the smoke detector. ...
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FirstAlert smoke detector low battery warning continues after opening battery drawer and replacing batteries

Note: I'm creating and immediately answering my own question because I wasn't able to find documentation of this solution online. My condo is equipped with a FirstAlert 7010BSL smoke detector (...
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Smoke alarm positioning - dead air?

For aesthetics, I'd ideally like to place the smoke alarm in this room in the middle of this 'square' area - see dot in attached picture. It's more than 300mm from any ceiling/wall corner, and thus ...
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Can interconnected smoke detectors be wired as spokes from an attic junction box?

Suppose 3 interconnected smoke detectors on first floor. Standard wiring would run 14/2 to first, then 14/3 (with red wire for interconnecting) to second, then 14/3 to third. My question is whether ...
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Does my smoke alarm battery need replacing?

I live in a flat in the UK. The flat is about 6 years old, and I moved in 4 years ago. The flat has a built in smoke-detector, and over the past few days, it has started 'going off' for about 10 ...
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How did a circuit that was shut off at the breaker almost kill me?

I just had a near-disaster while trying to install new smoke detectors. My house has AC hardwire connections for the smoke detectors. I wasn't sure which circuit the smoke detector AC connection was ...
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FIVE hardwired smoke/CO2 detectors, 4 on one floor in close proximity, PLUS ADT smoke/CO2 detector separately

Moved into a "new to us" home a few months ago. Made a small renovation (halved the kitchen and created a spare room). Four usable rooms total and a furnace/hot water heater utility room ...
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Photoelectric smoke detector, AC refrigerant, and a false alarm

I purchased a house about 7 months ago and found it had interconnected AC smoke/CO detectors that were all unplugged. Not knowing the age of them I replaced them all using photoelectric smoke/CO ...
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Smoke/CO Detector Location Within A Bedroom

This question concerns smoke/CO detector placement within a bedroom (the code is pretty clear regarding outside-of-bathroom & distance-from-kitchen-appliances). Given a 12x10ft bedroom, with the ...
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Are smoke/CO detectors required to be interconnected with wire?

I am planning on hardwiring 6 combination smoke/CO detectors on various levels of the house (2nd flr, 1st flr, basement) using 12/2 wire branching off from permitted sources (standalone 20a outlets). ...
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A spark while installing a smoke alarm

Short story: the black wire sparked when installing a hardwired smoke detector as I had left the power on. After properly turning off the power, I completed the installation and now everything works ...
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What is this electrical fixture above a natural gas fired forced air furnace?

While visiting my mother-in-law, we wanted to get the smoke detector situation in her house up to par (this is in Massachusetts, we're from Europe, though). She has a natural gas fired forced air ...
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Will most battery-powered smoke detectors attach to other back plates?

Need to replace a battery powered detector. Do most of them have the same sort of back plate or will I generally have to attach a new back plate? Do they usually come with a back plate?
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Can I wire a smoke detector so that it disables my furnace if smoke is present?

I have a standard Johnson Controls Unitary Products TM9V*MP board in my furnace wired to a nest thermostat. Can I wire my duct smoke detector so that it splices the R wire going from my furnace to my ...
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What smoke detector fits this bracket

There is an empty bracket for a smoke detector in the hallway. See picture. What brand/model of detector uses that kind of bracket?
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Hard-wired smoke detector chirps when light switch flipped

I have a hard wired smoke detector that is connected to the same circuit breaker as the two hallway lights. The two switches at the end of the hallway do not turn the smoke detector on and off, ...
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1k views

Why is a smoke alarm chirping at specific times of the day?

I have a smoke alarm (Kiddie) that is beeping regularly (every 30 seconds or so), what I would typically associate with a low battery. The strange thing is that the beeping is only happening between 5 ...
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2 votes
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Signalling a smoke alarm from interconnected (hardwired) detectors to an alarm panel

IMPORTANT NOTE: When reading the question below, keep in mind that Maryland law defines a "smoke alarm" as "single or multiple station device ... including a built-in internal alarm [...
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What do I do if some of my smoke alarms ac power doesn't work?

I have 5 smoke detectors in my home, 2 of them have the green ac power light on and are interconnected. Those 2 are on opposite sides of my home from each other but I have 3 on 1 side but those don't ...
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Apartment Fire Code [closed]

Recently had a main transformer blow in my apartment building, whole place was without power, but we did discover that the fire alarms had no backup power source to allow the alarm pulls to still ...
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Where should I put the Google Nest smoke alarm in this room?

I have a large open plan kitchen dining and living area with a high vaulted ceiling. The ceiling meets two separate one-sided peaks in two places on the wall. I'd like to put a single Google Nest ...
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Is there a technical reason why there are seemingly no smoke detectors that are battery operated, dual sensor, and interconnected?

I've viewed dozens of "top X smoke detectors of 2020" sites, and scoured the leading brands' sites (Kidde, First Alert, and Nest), but I can't find any that are battery operated, dual sensor ...
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Hardwired Smoke Detectors, go with sealed battery units or unlocked with lithium 10 year batteries

Not sure if this is the right place to discuss and can't find an exact answer in the other discussions. My smoke detectors were manufactured in 2009 so its time to replace. They are hardwired and ...
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Smoke detector wiring - black wire in 3 wire appears to be damaged. Can I use power from AFCI circuit to power but use red wire to interconnect?

I have ~10 smoke alarms (one per bedroom, one per hall). Somehow the last one isn't working. The green light didn't go on. I've done some troubleshooting - swapped the connectors and swapped the ...
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What should I do with the wires before I put a cap over the hole left by my (broken) electric smoke alarm?

We have a wired smoke alarm system. We've lived here 9 years and I have no idea if they work or not, so I installed battery-operated ones in pretty much every room. One day the wired one upstairs was ...
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How to connect fire (smoke or thermal difference), gas and CO alarms wirelessly?

There're detectors for smoke and thermal differences matching the characteristics of fire, carbon monoxide (CO) as well as natural gas. For some reason only some are combined (in the room where the ...
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Can Hardwired Smoke Alarms beep without power? [closed]

I have a hardwired smoke alarm that beeps even when I take the batteries out, unplug it from the outlet, and remove its cellularies. I was wondering if this is possible and if so, how long can they ...
1 vote
1 answer
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Is there a smoke alarm which can be hushed in DENSE smoke? [closed]

Every smoke alarm I've ever owned has a "hush" feature allowing you to push a button and stop a false alarm, for instance one caused by cooking. However, they all state a caveat in the owner'...
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238 views

Do Smoke Alarms have timers in them?

In my old residence, we had a smoke alarm that would always go off at 7 AM every Sunday. But whenever the power would go out it would go out at another random time, the first time was 3 PM every ...
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Could induced voltage cause interconnected fire alarms to activate?

After several weeks of the interconnected smoke alarms, I have had two momentary false alarms. I am yet to figure out why or what is causing this. Strangely they have both occurred at night causing me ...
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What type of wire to use for an overhead drop. For Fire Alarm system?

Type of wire needed? It seems to be a #14, 3 wire SO cord which was not the correct wire to use it has broken down in the sunlight. The insulation is brittle and it some places removed.
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Make-up Air intake tripping smoke alarm

I have the MUA intake vent on the patio of my condo, located on the ground floor, so the patio has a ceiling. Frequently when I barbecue, smoke rises and moves to MUA intake, and gets into the ...
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How can I pick a smoke detector that only detects smoke and not heat?

Currently, my home's smoke detector is situated right outside our bathroom in the hall. Whenever someone takes a hot shower (usually me), the steam escaping the bathroom trips the detector, presumably ...
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1 answer
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Lights on same circuit don't work after replacing smoke detector

The big picture is that I replaced a smoke detector and now I can't get the light switches on the same circuit to work. I'm in an place that I recently moved to and don't have detailed electrical info ...
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1 answer
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Should the interconnect wire for smoke alarms read 120v?

Today I installed some new Kidde PI2010 Hardwired Dual Photoelectric and Ionization Sensor Smoke Alarm with Battery Backup smoke alarms. I am interconnecting 5 of them in my home. When I hooked up the ...
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What do I do with the ground wire in a smoke detector install?

The electrician ran 14/3 to a metal box. There is no grounding post on the Kiddie i12010s smoke detector. Can I just cap the ground and call it done? Doesn’t seem right but I’m not sure how to ...
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Should smoke detectors be on AFCI/GFCI breakers?

I've heard conflicting advice whether smoke detectors should be on a simple over-current breaker or a AFCI/GFCI breaker. On one hand you want the circuit to be as reliable as possible and since there ...
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Smoke detector placement in long open concept space

I've just moved into a new house and it doesn't have a smoke alarm on the main floor yet. The main floor is a long rectangular open concept design, with living room at the front near the front door, ...
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Sprinkler system & smoke detectors - Illinois code requirements when closing loft

I am looking to close a loft and turn it into bedroom. I live in Illinois and house (built on 2007) has fire sprinkle system and smoke detectors through all the floors. After closing loft there will ...
3 votes
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Remove CO detector From wired alarm system

My house has a wired smoke alarm system, three smoke detectors and one CO detector. These are all old firex detectors, I am replacing them with three kiddie smoke alarms where one is combo CO + smoke ...
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Smoke detector position vs air register

Are there regulations about positioning a smoke detector in the vicinity of an air register? I would like to position it within 3 ft aerial distance but I'm concerned the air flow might be blowing ...
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