Experienced Electrician! Here to Answer Any and All Growroom Electrical Questions

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bongrippinbob

Well-Known Member
420iroc said:
how can i make a 220 light timer for 4 lights
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Buy a lighting controller for like $150-$250. You will be able to run up to 4x1000watts off the same controller plugged into a dryer outlet. Then you just use standard 120v timer hooked up to the trigger cord in order to run the lights from the timer.
 
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chupacabra4real

Active Member
I connected two pc fans they run on 12 v and 60 mAmp....I connected both to a 1000 mAmp ballast with tension change and i only give them 7,5 volts....i was told to give them less voltage due to amperage difference .I would like to raise the volts though ,give them....say ....about 9 v....cause i need them to turn faster......i'm afraid to give them the full 12 v ,cause i heard they might bburn due to amperage difference (1000ballast - 60pc fan).would you please enlight my mind?Cause I don't know much in electricity .Thank you
 
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mrmadcow

Well-Known Member
chupacabra4real said:
I connected two pc fans they run on 12 v and 60 mAmp....I connected both to a 1000 mAmp ballast with tension change and i only give them 7,5 volts....i was told to give them less voltage due to amperage difference .I would like to raise the volts though ,give them....say ....about 9 v....cause i need them to turn faster......i'm afraid to give them the full 12 v ,cause i heard they might bburn due to amperage difference (1000ballast - 60pc fan).would you please enlight my mind?Cause I don't know much in electricity .Thank you
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when you say ballast,I assume u mean transformer?don't worry about giving them too much amperage,they will only draw what they need.a transformer w/ too few milliamps could be a problem but not to many.
 
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chupacabra4real

Active Member
do you mean i can give them more or less .as I want ....or is it better to give the total max 12 v all the time? .............and yes ,I mean transformer.........
 
BigBudBalls

BigBudBalls

Well-Known Member
The 1000ma power source is rated the max it can give, not the minimum.
The 2 6ma fans will use 120ma or about 12% of what the power supply can give. Give 'em full 12Vs. Nothing will burn out.

chupacabra4real said:
I connected two pc fans they run on 12 v and 60 mAmp....I connected both to a 1000 mAmp ballast with tension change and i only give them 7,5 volts....i was told to give them less voltage due to amperage difference .I would like to raise the volts though ,give them....say ....about 9 v....cause i need them to turn faster......i'm afraid to give them the full 12 v ,cause i heard they might bburn due to amperage difference (1000ballast - 60pc fan).would you please enlight my mind?Cause I don't know much in electricity .Thank you
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burnbig420

Active Member
how should i go about adding another 40amp double pole breaker and running wire to my grow room which is in my garadge.

there is plenty of exrtra space on my panel which is in my laundry room..

i already have 3 50amp double poles ran to my garadge and its just not enough

help would be much appreciated
 
Danielsgb

Danielsgb

Well-Known Member
Well, a buddy was suppose to come help me (couple weeks ago) wire my squirrel cage exhaust fan. It's a 240 V and I wired it and made sure it worked in the installation phase. I got this timer and installed it but I'm unsure how to wire it. I don't want to get it wrong. I understand a fair amount about wiring but reading the instructions isn't helpful. Here's some pic. Any help would be greatly appreciated. My grow room is at the stage where I need it.:wall:
I think it's the bottom right on that wiring diagram pic.
 

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bongrippinbob

Well-Known Member
May I ask why you are wiring a timer to your exhaust fan? If that is in your flower room you will pretty much need the fan running all the time. After about 4 weeks of flower, if I turn off my fan I will end up with like 80% humidity. You will end up with moldy buds if you run your humidity that high.
 
Danielsgb

Danielsgb

Well-Known Member
bongrippinbob said:
May I ask why you are wiring a timer to your exhaust fan? If that is in your flower room you will pretty much need the fan running all the time. After about 4 weeks of flower, if I turn off my fan I will end up with like 80% humidity. You will end up with moldy buds if you run your humidity that high.
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It's for the whole grow op. Depending on the weather that fan will move so much air that the heating system will run to much and I want to conserve power. Plus I got it for $25 so a $38 timer that can run it in 30 min increments made sense. Now if I can wire it, I will be happy.:bigjoint:
 
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bongrippinbob

Well-Known Member
I'm kind of at a loss as to what you are referring to. What do you mean the heating system won't have to run? Aren't you running the fan to cool the room not heat it? When I was trying to run CO2 in my flower cab, I could only turn off the exhaust fan for about 15min before my humidity went through the roof. If you have a dehumidifier that wouldn't be a problem, but you don't want your humidity at 80% a couple of times a day.

That fan couldn't be pulling too many watts. My 747cfm vortex only uses like 250watts. Those blowers usually use less power. So if it is at say 200watts, running 24hrs a day, with electricity costing like 15cents a kwh, you will only be spending like $20 a month. To me, $20 a month is well worth not having to worry about humidity and mold in harvest. And if your electricity is closer to 10cents a kwh, you are only spending $15 a month.
 
Danielsgb

Danielsgb

Well-Known Member
bongrippinbob said:
I'm kind of at a loss as to what you are referring to. What do you mean the heating system won't have to run? Aren't you running the fan to cool the room not heat it? When I was trying to run CO2 in my flower cab, I could only turn off the exhaust fan for about 15min before my humidity went through the roof. If you have a dehumidifier that wouldn't be a problem, but you don't want your humidity at 80% a couple of times a day.

That fan couldn't be pulling too many watts. My 747cfm vortex only uses like 250watts. Those blowers usually use less power. So if it is at say 200watts, running 24hrs a day, with electricity costing like 15cents a kwh, you will only be spending like $20 a month. To me, $20 a month is well worth not having to worry about humidity and mold in harvest. And if your electricity is closer to 10cents a kwh, you are only spending $15 a month.
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Sorry I didn't explain it much. That exhaust fan will have the DIY Carbon Filter then go out the house. A dryer vent covers it when it's off. MT winters are cold and when I tested it the furnace kicked on pretty quickly. I did more testing and it must vent a lot of air out. This house is a 70's so it's probably not to tight. . The other reason is the fan is kinda loud. I'll throw up some pics. It's a pretty cramped area. This is my first grow in 7 yrs, and a "make the best of what you can" grow op. I also can't put any more $$ into this for a while.:blsmoke: Most likely till my first harvest.:weed:
 

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chupacabra4real

Active Member
Is it safe to hook 6-7 40 watt cfl s on the same power cable?If so....how should it be done? (dumb question i know, but just wanna make sure I don t burn my house) +rep
 
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Kalibre

Member
Hello!

I was hoping someone could help me with a question regarding computer power supplies. :confused:

I am currently using the only PSU i had laying around, a 500w Antec, to power two computer fans inside a box. They are the average size computer fans, Thermaltake (i think they say 72+ cfm?).

How many watts does it actually use for 2 fans? Does it ummm.. spike full power when you turn it on for a second or anything like that?

I have 400w of CFL and a now a 400w HPS is coming and i'm worried about my lil' power strip.

Thanks in advance, and i apologize if this question has been asked and answered already.



:joint: Respect
 
Danielsgb

Danielsgb

Well-Known Member
I have another of these little fans. It says 3V 500ma. I have several power supplies from old stuff. I have 2 of these $6 fans, so if it wears them out faster no big deal (just 1 flowering harvest would be OK). I assume the mA is a tenth of A so the 210 mA =.21mA (kinda medicated). :eyesmoke: I get that over 3V is over powering it, but would the 4.5V.4A adapter fail cause the fan is 500mA? What about the 5.0V 1000mA? Can I power both with it. both are 6V so its 2.5V out of the 3V to each right? that makes more sense to me but I want them to run like raped apes:twisted: So faster is better:fire:
9V 210mA
4.5V .4A
7.2V 500mA
12VAC 833mA
9V 800mA
5.0V 1000mA
Thanks
Daniels
 

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mrmadcow

Well-Known Member
Danielsgb said:
Well, a buddy was suppose to come help me (couple weeks ago) wire my squirrel cage exhaust fan. It's a 240 V .......
I think it's the bottom right on that wiring diagram pic.
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not sure about diagram ,its to fuzzy.can you post a better picture or make/model of the timer?
what I think Bob is getting at is running a fan on a timer is not a good way to control temps,a thermostat and humastate would be better.when the temps or humidity go above a preset amount, the fan goes on until it drops.you would not want the fan sitting idle while temps shoot up over 120 because the timer says it should be off.
 
Danielsgb

Danielsgb

Well-Known Member
mrmadcow said:
not sure about diagram ,its to fuzzy.can you post a better picture or make/model of the timer?
what I think Bob is getting at is running a fan on a timer is not a good way to control temps,a thermostat and humastate would be better.when the temps or humidity go above a preset amount, the fan goes on until it drops.you would not want the fan sitting idle while temps shoot up over 120 because the timer says it should be off.
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Yea that makes sense. I was going to look into a thermostatic way to control the whole room. I can't spend any more $$ on my set-up so I'm trying to make due with what I have already. Here's more pics. I haven't found it's diagram yet online It's a GE Time Switch (56922, 15087, 15207). If this won't help I can dust my scanner off and unpack it. Thx
Daniels
 

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