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Hooty
Joined: 27 Oct 2009
Posts: 16
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| Posted: Wed Jan 06, 2010 2:06 pm Post subject: Zenith Pro900x power consumption |
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I looked through the documentation and couldn't find what the power consumption for the Pro900x is. I found Volts and Amps listed on the side but not Watts.
Yes I know VA=W but are they in phase or do I need to apply a PF and if so what is the PF? Of course, if someone happens to know the Wattage already I won't need the PF.
I'm asking because my power bill has gotten way out of control. I am taking a closer look at everything that uses electricity in my house and coming up with ways to cut back like putting the water heater on a timer, shutting the A/C / Heater off when I leave for work, shutting off my PC when I'm not using it, etc.. I plan to use the 900x as my primary display for tv viewing and console gaming, but I need to know how much it's going to cost me to run it. If the power consumption is too high I might only be able to afford using my old tv most of the time and only using the projector for special occasions like renting a movie and when the guys come over to watch the game.
I would really like an answer to the power question.
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Wed Jan 06, 2010 2:46 pm Post subject: |
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Where do you live? A projector shouldn't cost you that much to run, unless you're running it 8 hours/day, in which case you need to get outside more. 
Seriously, though... It will probably draw under half the current stated most of the time, so that should get you in the ballpark.
If you really want to find out where the power-suckers are in your place though, pick up a Kill-a-Watt and check you stuff out.
SC
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TheVerge
Joined: 19 Jul 2009
Posts: 928
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| Posted: Wed Jan 06, 2010 2:51 pm Post subject: |
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Might be lower, some of those plasma's suck power big-time.
Buy a kill-o-watt and you can see what's using all the power.
Don't leave the refrigerator door open.
Make sure your insulation is good.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Jan 06, 2010 2:54 pm Post subject: |
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A switch mode power supply as found in the Zeniths (and all other CRT projectors) are about the most efficient devices out there. I'll bet you $1.00 that you wouldn't see a difference in your power bill between running the projector 5 hours a day or not at all.
Your power suckers are incandescent lights, dryer, dishwasher, heaters and the fridge and furnace.
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Wed Jan 06, 2010 4:24 pm Post subject: |
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| Curt Palme wrote: | | I'll bet you $1.00 that you wouldn't see a difference in your power bill between running the projector 5 hours a day or not at all. |
Exactly - unless you're watching it 24/7, or you're budget is REALLY tight, it's going to be a pretty small amount in the context of all the other energy hogs in a typical house.
| Curt Palme wrote: | | Your power suckers are incandescent lights, dryer, dishwasher, heaters and the fridge and furnace. |
Exactly. An few light bulbs on 24/7 can easily add up to a projector being on for 4-6 hours a day. A big heater or stove in use for several hours can EASILY use more power than a projector for the entire month.
The brochure for the 895x says 400w max, but we'll use 300w which is still high... If you run it 5 hours/day, you're looking at around 1.5kwh/day, or about 45kwh/month. I pay 8 cents/kwh where i live, so I'd be looking at a whopping $3.60/month to watch run the projector 5 hours a day.
If you've got electric heat, electric hot water, electric clothes dryer, or central A/C, those are your really big power hogs.
SC
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TheVerge
Joined: 19 Jul 2009
Posts: 928
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| Posted: Wed Jan 06, 2010 4:44 pm Post subject: |
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| ecrabb wrote: | | Curt Palme wrote: | | I'll bet you $1.00 that you wouldn't see a difference in your power bill between running the projector 5 hours a day or not at all. |
Exactly - unless you're watching it 24/7, or you're budget is REALLY tight, it's going to be a pretty small amount in the context of all the other energy hogs in a typical house.
| Curt Palme wrote: | | Your power suckers are incandescent lights, dryer, dishwasher, heaters and the fridge and furnace. |
Exactly. An few light bulbs on 24/7 can easily add up to a projector being on for 4-6 hours a day. A big heater or stove in use for several hours can EASILY use more power than a projector for the entire month.
The brochure for the 895x says 400w max, but we'll use 300w which is still high... If you run it 5 hours/day, you're looking at around 1.5kwh/day, or about 45kwh/month. I pay 8 cents/kwh where i live, so I'd be looking at a whopping $3.60/month to watch run the projector 5 hours a day.
If you've got electric heat, electric hot water, electric clothes dryer, or central A/C, those are your really big power hogs.
SC |
When you have electric heat, and the worst cold spell i can possibly remember... yea, leaving a freaking projector on 24/7 is the last of my electricity worries.
I would work on your thermostat, take shorter showers(if you have electric water heater), and wash your clothes in cold water. It's a start anyways, i doubt your projector is hogging much.
BTW, a giant computer can really cost you in electricity if you leave it on all the time. Just think it's on 24/7, and in the summer it's producing heat which the air conditioner then has to kick on to remove.
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Xeus
Joined: 07 Mar 2006
Posts: 111
Location: N.E. Wisconsin
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| Posted: Wed Jan 06, 2010 9:53 pm Post subject: |
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A refrigerator with bad valves in the compressor or a slow freon leak will run continuously and rack up a lot of KW's.
Matt
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Wed Jan 06, 2010 10:31 pm Post subject: |
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| TheVerge wrote: | | BTW, a giant computer can really cost you in electricity if you leave it on all the time. Just think it's on 24/7, and in the summer it's producing heat which the air conditioner then has to kick on to remove. |
True. Maybe it's only 300-400w, but if it runs 24/7, it can certainly add up.
| Xeus wrote: | | A refrigerator with bad valves in the compressor or a slow freon leak will run continuously and rack up a lot of KW's. |
Yep. That's where a Kill-A-Watt can come in handy.
I have an oil-filled space heater that can run 600w, 1200w, or 1800w. Just for fun, I ran the numbers and if I accidentally left that thing on in the basement or whatever on the 1200w setting, 24/7 for a month, it would run me about $70!!! That's almost as much as my monthly electric bill for the entire house... for one space heater on a 15A circuit!
SC
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Hooty
Joined: 27 Oct 2009
Posts: 16
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| Posted: Thu Jan 07, 2010 3:42 pm Post subject: |
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I appreciate the info. 400 sounds a lot better than I was getting when figuring VA without a PF. 120x7=840Watts. I've got servers that pull less than that. (the servers are in storage and only get used for LAN parties so no blaming the power bill on them)
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Thu Jan 07, 2010 3:48 pm Post subject: |
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Even using your 840w figure though, and watching the projector 8 hours/day, 7 days/week for a sold month would "only" be $16 at my .08/kwh rate. I say "only" because $16/mo is nothing to sneeze at, but considering all our other large expenses (taxes, mortgage, food, etc.) $16 is nothing.
If you don't mind me asking, where in the world are you, and what's your electric bill look like?
SC
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Jan 07, 2010 3:56 pm Post subject: |
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I have a Kill-a-watt and my 9500LC pulls about 200 on black field, and a bit more than 400 on white field. I have the thomas tubes in my current chassis and for whatever reason they bloom way easily, so I keep the contrast low, but I can't imagine pulling more than 500-600w.
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Hooty
Joined: 27 Oct 2009
Posts: 16
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| Posted: Thu Jan 07, 2010 4:22 pm Post subject: |
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I live in Georgia and my power bill was just under $100 bucks. For one person. That's almost as much as the rest of my utility bill put together which includes water, sewage, trash, internet, and cable. My parents live in the same town with a bigger house and my younger sister, they only average around $70 with the heater on 24/7 and multiple computers that never get turned off.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Thu Jan 07, 2010 4:23 pm Post subject: |
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Did someone tap into your power to run grow op lights? 
Don't laugh, it happens all the time here in Vancouver..
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Thu Jan 07, 2010 4:36 pm Post subject: |
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Yeah, that definitely sounds high - sounds like you have a problem. Time to start checking major appliances like the fridge. Unless you have electric heat - a bad cold snap can really rack up the juice to keep the house warm with electric heat.
That, or somebody hooked up a bunch of grow lights.
SC
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Xeus
Joined: 07 Mar 2006
Posts: 111
Location: N.E. Wisconsin
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| Posted: Thu Jan 07, 2010 4:59 pm Post subject: |
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| Quote: | | my power bill was just under $100 bucks |
Is this a recent event? Are you into decorating outside for xmas? Those tiny lights add up. A few years ago I put lights on a lot of the large evergreens outside to the tune of about 12,000 lights. That gave the power meter a good workout.
Matt
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Thu Jan 07, 2010 5:04 pm Post subject: |
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You guys pay 8 cents per kw/hr? Mine is more like 22 cents. My total gas and electric last month was $315.00
Electric Meter Usage Details
Service/Rate
Meter # Dates/
Meter Readings Meter
Constant Therm
Multiplier Total
Usage Amount
ELEC/DR 11-06 12-09
#00976777 28666 29606 1 940 kWh $127.61
Baseline Allowance 356 kWh
Baseline Usage 356 kWh @ $.04455
101% - 130% of Baseline 107 kWh @ $.06472
131% - 200% of Baseline 249 kWh @ $.21019
Over 200% of Baseline 228 kWh @ $.23019
DWR Bond Charge 940 kWh @ $.00491 4.62
Electric Energy Charge
Baseline - 356 kWh @ $.07921 28.20
101% - 130% of Baseline - 107 kWh @ $.07921 8.48
131% - 200% of Baseline - 249 kWh @ $.07921 19.72
Over 200% of Baseline - 228 kWh @ $.07921 18.06
TOTAL ELECTRIC CHARGES $206.69
Gas Meter Usage Details
Service/Rate
Meter # Dates/
Meter Readings Meter
Constant Therm
Multiplier Total
Usage Amount
GAS/GR 11-06 12-09
#00286138 3992 4078 1.000 1.018 88 Therms $60.18
Baseline Allowance 51 Therms
Baseline Usage 51 Therms @ $.57027
Non-Baseline Usage 37 Therms @ $.84050
SDG&E's Average Cost Per Therm This Month $.49822
Gas Energy Charge
Usage 88 Therms @ $.49822 9/ 33 Days 11.96
Usage 88 Therms @ $.47177 24/ 33 Days 30.19
TOTAL GAS CHARGES $102.33
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Thu Jan 07, 2010 6:40 pm Post subject: |
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Must be a lot of showering and hair drying going on. 
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