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Forum » can any misc tradies or DIYers help me with this wiring?
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Thread: can any misc tradies or DIYers help me with this wiring?

post 1665272093 07-30-2022, 10:12 PM
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can any misc tradies or DIYers help me with this wiring?

Installed a new bathroom exhaust fan. I have a 12/2 coming from the wall, but the wiring diagram is confusing af






I only care about hooking up the fan (no light or heater connections needed). this is my attempt:





there's a black and white wire coming from the black outlet, so I hooked that up to my house wiring and connected ground. doesn't work when I turn it on.


the wires are also different - solid vs threaded



can I just pinch/spiral them together and put a cap on it? OR do I need the wires to go through the 20 amp circuit like in the wire diagram



My first time playing with wiring tbh so I have no clue what I'm doing and might have to call the electrical tradie on monday.
watchout your comments boyo ↓
post 1665272363 07-30-2022, 10:19 PM
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I don’t know jack chit about electrical, but I thought most overhead wiring is 14/2 and outlets were 12/2.
post 1665272443 07-30-2022, 10:20 PM
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Isn't most of that internal to the device and you don't need to worry about them? The 120 VAC line in would be where it is hooked up. But instructions should be followed.
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post 1665272473 07-30-2022, 10:21 PM
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post 1665272713 07-30-2022, 10:26 PM
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i was in my attic for so long installing mine because i had to build like a frame for it

fkn sucked

the closest i got on wiring was that flipping both switches on will turn on the light it has plus the fan but i wasn't able to figure out how to only turn on its light

hopefully you got a powermaxxed 130cfm one hehe
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post 1665273183 07-30-2022, 10:43 PM
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Should just need the black, white and ground. Is there multiple wiring option diagrams? That looks its geared for tapping into a switched outlet.

I guess the question is, does it work as wired?
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post 1665273613 07-30-2022, 10:57 PM
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Originally Posted By TallTigerTwo⏩
I don’t know jack chit about electrical, but I thought most overhead wiring is 14/2 and outlets were 12/2.
maybe it is 14/2 I don't know what I'm talking about srs lmao
Originally Posted By BraddlesMcGee⏩
Isn't most of that internal to the device and you don't need to worry about them? The 120 VAC line in would be where it is hooked up. But instructions should be followed.
it's not internal to the device - the instructions say to use a 20 amp circuit to connect from the 120 VAC line but i'm trying to avoid doing all that since I only care about powering on the fan
Originally Posted By Ratfish⏩
i was in my attic for so long installing mine because i had to build like a frame for it

fkn sucked

the closest i got on wiring was that flipping both switches on will turn on the light it has plus the fan but i wasn't able to figure out how to only turn on its light

hopefully you got a powermaxxed 130cfm one hehe
I ran in the same shenanigans but tried installing without accessing the attic - since this bathroom and attic access is like 20 feet apart. Ended up with this model fan because it was the biggest that would fit in the already cut housing from the previous fan.
Originally Posted By desslok⏩
Should just need the black, white and ground. Is there multiple wiring option diagrams? That looks its geared for tapping into a switched outlet.

I guess the question is, does it work as wired?
It did not work. Wasn't sure if I was on the right path or maybe my connections with the wires are just too loose. That was the only wiring diagram.
watchout your comments boyo ↓
post 1665274243 07-30-2022, 11:09 PM
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Brand and model #? Did it come with a wall switch?
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post 1665274383 07-30-2022, 11:13 PM
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Originally Posted By desslok⏩
Brand and model #? Did it come with a wall switch?
Broan-NuTone BHF80


no, basically everything in the picture is what it came with. the fan component just screws in and plugs into black outlet.
watchout your comments boyo ↓
post 1665274473 07-30-2022, 11:17 PM
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Originally Posted By iwant2beswole⏩
Broan-NuTone BHF80


no, basically everything in the picture is what it came with. the fan component just screws in and plugs into black outlet.
That looks right then. Have you checked all the breakers? My guess is a breaker tripped or half tripped. Sometimes you have to flip them off and then back on fully.

Do you have a voltmeter?
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post 1665274913 07-30-2022, 11:28 PM
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Originally Posted By desslok⏩
That looks right then. Have you checked all the breakers? My guess is a breaker tripped or half tripped. Sometimes you have to flip them off and then back on fully.

Do you have a voltmeter?
Breakers were all good. There's two switches in that bathroom, one for the light and one for the exhaust fan, light worked find when I switched on power.


Think I might pick up these tomorrow to rule out any sloppy connection workhttps://www.homedepot.com/p/WAGO-2-W...3606/318073007


And I do not have a voltmeter, I should probably get one
watchout your comments boyo ↓
post 1665288993 07-31-2022, 09:24 AM
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I looked at this last night and thought I would be able to understand it better today.

I can't really tell by your picture what all is going on.

A real rough guess is that the red and white wire together doesn't look right, but again I can't really tell which wire is coming from where. I believe the red should be a traveler live wire and would possibly go to a black or blue instead.

I noticed you have a blue wire and it looks like the diagram they gave you shows connecting a blue to a red.

Edit: I like those wago connectors but I would still recommend putting a little electrical tape on them so the doors don't pop open
post 1665294623 07-31-2022, 11:05 AM
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Take apart the red and white wire, then go black and red together
post 1665295343 07-31-2022, 11:24 AM
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you could follow that diagram 100% and still be wrong. unless youre at new construction the guy who wired it before you could have done some different chit

power from the bottom half of outlet - black to your vent

all of your whites are neutrals and should stay together


you have another black wire that's hot - that's not from your outlet that is supplying power to your light
blue from your outlet (another source of power) goes to red to the other side of your light

all your greens stay together

what i dont understand is where the heat gets power from in that diagram

the black goes up to red but i dont understand where the red is getting power from. looks like a transformer possibly

is there a red and white kinda pre installed wire coming from the transformer?

also, 12 and 14 gauge shouldn't mix. you might be able to get by but 12 should be on a 20 amp breaker. it def. shouldn't if its on a 15
post 1665296593 07-31-2022, 11:51 AM
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Pretty ironic people on this board make fun of tradies, yet no one in this thread can install this or knows what they are talking about.
post 1665297163 07-31-2022, 12:02 PM
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Originally Posted By skier!⏩
Pretty ironic people on this board make fun of tradies, yet no one in this thread can install this or knows what they are talking about.
and this is nothing compared to a relay circuit with time and open/ closed positions. e.g. light is normally closed when fan is normally open

i do know what im doing. if you follow the black line from heat, it goes up to red. i can't tell where the red is coming from. it looks like a wire nut, but shouldn't be with the neutrals going with the hots. so seems like two lil dedicated spots, perhaps a red wire dangling and a white wire dangling. im thinking the transformer has that

if that's the case then black from the vent connects to red and the neutrals should stay separate
post 1665297803 07-31-2022, 12:16 PM
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On one of your pics you’ve got the red from the fan (which is supposed to connected to the hot wire I believe , typically black ) going to white (typically the neutral ).
I say typically ,as without a volt meter you won’t know for sure .
Back with my Fam
post 1665297933 07-31-2022, 12:18 PM
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Get this or something similar if you haven't already OP.

https://www.amazon.com/Non-Contact-D...dp/B099SJ6469/
post 1665298053 07-31-2022, 12:20 PM
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Originally Posted By MajorTendonitis⏩
On one of your pics you’ve got the red from the fan (which is supposed to connected to the hot wire I believe , typically black ) going to white (typically the neutral ).
I say typically ,as without a volt meter you won’t know for sure .
in his 1st pic also looks like he has ground to hot as well

some major fukery

thats why i was laying out just what he should do. but if he doesn't know what hot/ ground are

op you should def. call a tradie

edit: nvm. that ground is dark green. but yea white and red shouldn't be together
post 1665298253 07-31-2022, 12:24 PM
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Haven’t heard from OP today. Likely deaded/fried from playing with wires. All you wanted was a fan to cleanse the air of your chit clouds, but now you’re in the clouds yourself.

RIP OP
7/29/2022
post 1665298823 07-31-2022, 12:33 PM
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What's confusing is the switch they are using

If you only want the fan then you only need a reg switch

The switch will have black and white top and bottom

The green is ground ,they all get nutted together

The whites all get nutted together

One coming from switch ,and two feeds in unit


Now your only concern is the black for the vent ,it's coming from the right feed of unit


Wlnut that to the black from switch


Cap off the red and black left over since you're not using them


Rep me if I'm right

I'm not an electrician, but I've done enough of it

This is just a simple process of elimination
post 1665298993 07-31-2022, 12:35 PM
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And actually, the whole left side of box is light and heat

Do t even connect the white or ground

Just nut all 3 off ,you're not using them
post 1665299123 07-31-2022, 12:37 PM
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Do ->NOT<- hook up red to white.
post 1665299193 07-31-2022, 12:38 PM
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Originally Posted By TallTigerTwo⏩
Haven’t heard from OP today. Likely deaded/fried from playing with wires. All you wanted was a fan to cleanse the air of your chit clouds, but now you’re in the clouds yourself.

RIP OP
7/29/2022
Lmao, I think he dieded
Back with my Fam
post 1665299403 07-31-2022, 12:42 PM
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Im assuming everything in the unit is already wired and you have leads coming out of it right ?


Cuz in that diagram ,there's one black wire coming from right side into switch box


But look at the other end in. The unit

There's two black

So ,one black disappeared


Lol, diagram is fkd up
post 1665299583 07-31-2022, 12:44 PM
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Oh no ,my bad ,it's the ground that appears in unit but not going into right feed in switch


SMH
post 1665299623 07-31-2022, 12:45 PM
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Is op dead?
I loe e.
post 1665299813 07-31-2022, 12:47 PM
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Unless it's just grounded to box at same location

I dunno ,whole diagram is chinese


Do what I said in first post

Shouldn't be hard to get it working

But yeah ,cap off reds ,period, you're not using it
post 1665299983 07-31-2022, 12:49 PM
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Originally Posted By wasp9166⏩
Im assuming everything in the unit is already wired and you have leads coming out of it right ?


Cuz in that diagram ,there's one black wire coming from right side into switch box


But look at the other end in. The unit

There's two black

So ,one black disappeared


Lol, diagram is fkd up
i honestly didn't think there was a switch.

but that little unit to the left of the junction is a switch? maybe a smart switch or something?

the power going into that junction goes to the light, then the red from the outlet (connected to the blue) might be switched from the outlet

that little unit to the left doesn't seem like a normal switch

anyways, i agree the diagram is a little vauge

the only 2 places for what he's installing to get power are from the outlet or that 120v line coming in to the junction box
post 1665301423 07-31-2022, 01:17 PM
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Originally Posted By propreffered7⏩
i honestly didn't think there was a switch.

but that little unit to the left of the junction is a switch? maybe a smart switch or something?

the power going into that junction goes to the light, then the red from the outlet (connected to the blue) might be switched from the outlet

that little unit to the left doesn't seem like a normal switch

anyways, i agree the diagram is a little vauge

the only 2 places for what he's installing to get power are from the outlet or that 120v line coming in to the junction box
The switch is in the wall

Bottom of diagram


If op is supposed to wire the unit himself then the left feed isn't even needed


If you're going to use all three ,then you need a triple switch

It would have three buttons

For just the fan,it's a simple normal switch like you have for a light
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