Hps Questions

[EpiDemiK]

Got a few questions about a 250watt Hps I may be getting. I read another user's topic about his Hps malfunctioning and making a noise similar to what it normally does. Since the ballast and bulb would be near my room, should I expect anything loud (annoying buzzing etc.) during normal use? Also, what heat should I expect with a 250watt? What should I expect it to cost on the electric bill? Thanks in advance

 

[dankie]

magnetic ballasts are known to buzz and click when they start up.
digital ballasts operate without the buzz, but still make noise when they start up.

 

[thcheaven]

My new 400W switchable makes a slight hum. I don't even hear it anymore, my wife says it bugs her, So I guess it's up to each person.

 

[EpiDemiK]

Thanks guys, the noise was the only thing that slightly worried me.

 

[Blowedallday]

it will sound like a street light or a light in a parking lot if you have ever heard one of those before it will be a slight buzzing nothing big or noticable

 

[email468]

i have a 1000w dual-spectrum magnetic ballast. I would tell you how noisy it is but i can't hear anything over the fan noise.

 

[CannaManna]

i have two 400w magnetic ballasts and i can't hear it at all when my quiet fan is going.. a slight buzzing is there when the fan and heater are turned off but nothing very noticeable.

 

[email468]

i have two 400w magnetic ballasts and i can't hear it at all when my quiet fan is going.. a slight buzzing is there when the fan and heater are turned off but nothing very noticeable.

should have got the quiet ones - mine sound like a damn jet engine or wind tunnel.

 

[CannaManna]

Got a few questions about a 250watt Hps I may be getting. I read another user's topic about his Hps malfunctioning and making a noise similar to what it normally does. Since the ballast and bulb would be near my room, should I expect anything loud (annoying buzzing etc.) during normal use? Also, what heat should I expect with a 250watt? What should I expect it to cost on the electric bill? Thanks in advance

One 250w shouldn't add much to the electric bill, my two 400's add about $15 a month which can easily be countered which energy smart choices around the house.

 

[email468]

here is the formula i gave on another post ....
To calculate cost: multiply bulb wattage (WT) times hours of operation (HRS) and divide by 1000. This equals the number of kilowatt hours of electricity consumed.

Example: a 400 watt bulb running 18 hours will consume 7.2 kilowatt hours (400 X 18 / 1000)

check your power bill for the cost of each kilowatt hour. You can then multiply the number of kilowatt hours by the cost of a kilowatt hour to determine the cost per month.

Some examples (assuming a price of .04 per kilowatt hour):
A 400 watt light fixture running 6 hours a day:
6 HRS X 400 WATTS \ 1000 X .04 X 30 (days) = $3.31 per month

A 1000 watt light fixture running 24 hours a day:
24 HRS x 1000 WATTS \ 1000 X .04 X 30 (days) = $28.80 per month

The formula is:
Bulb Wattage = WATT
Hours of operation = HRS
Cost per Kilowatt hour (should be represented in cents like .04 or .06)= .KH
the 1000 is part of the formula
and the 30 represents days in a month

FORMULA:
WATT X HRS \ 1000 X .KH X 30 = cost per month

So you would read that as Watts times hours divided by 1000 times cost of kilowatt hour times 30 days equals cost per month

 

[asiankatie]

i have a 400 watt. and i dont hear it, the airstone is louder.