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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Fri Feb 15, 2008 1:07 am Post subject: Equipment move, need a in-line pwer conditioner, or not. |
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I am in the middle of a complete equipment relocation. I will be running a dedicated power line to that location. I have two choices, extend the 20 amp dedicated circuit that powers the projector or run a second line direct to the rack. I can bump the amps to 30 as the feed to the projector is 10 ga. wire and snake 12-2 greenfield right in the same conduit as the RGBHV to the rack. Inside the rack I plan to hard-wire 4 or 5 4X4 metal boxes with 4 plugs ea. I would like to add some sort of protection to the main feed, perhaps even some sort of large ups. I have had power spikes and brown-outs in the past that have taken out equipment. This I would like to resolve as I'm re-populating with mostly new equipment. I'm open to suggestions and I'm sure here I'll get my share. 
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Fri Feb 15, 2008 11:29 am Post subject: |
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Poking around E-bay, I've come across some uniterruptable power supplies. Some with and some without batteries. I'm curious. If you had one with sufficient power to handle the load but has bad batteries, could you hard-wire it directly to a larger type boat/truck battery? I have not done a load calculation yet but I don't think that the 8-10 devices in my rack total a heck of a lot. The projector being the biggest draw at 800 watts.
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Chip
A Barco is only a AmPro with training wheels
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Fri Feb 15, 2008 3:11 pm Post subject: |
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| stefuel wrote: | | Poking around E-bay, I've come across some uniterruptable power supplies. Some with and some without batteries. I'm curious. If you had one with sufficient power to handle the load but has bad batteries, could you hard-wire it directly to a larger type boat/truck battery? I have not done a load calculation yet but I don't think that the 8-10 devices in my rack total a heck of a lot. The projector being the biggest draw at 800 watts. |
Floor polisher batteries are capable of much longer sustained load. A guy at my yacht club has done this with a heavy UPS and runs his entertainment/PC/etc stuff for hours at a time.
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"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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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: Fri Feb 15, 2008 3:17 pm Post subject: |
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I'd think you'd have issues with things like charging current. If you get a decent charging circuit separately, the heavy duty batteries will last longer than the smaller stock ones, but the available VA (watts) from the UPS won't increase.
I'd use the stock batteries. If you start running wires outside of the UPS, you can also null and void your insurance policy if the contraption catches fire.
In your case I would get some surge suppression, there's a couple of good threads over in the >$20K avs forum.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 15, 2008 6:29 pm Post subject: Re: Equipment move, need a in-line pwer conditioner, or not. |
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| stefuel wrote: | | I am in the middle of a complete equipment relocation. I will be running a dedicated power line to that location. I have two choices, extend the 20 amp dedicated circuit that powers the projector or run a second line direct to the rack. I can bump the amps to 30 as the feed to the projector is 10 ga. wire and snake 12-2 greenfield right in the same conduit as the RGBHV to the rack. Inside the rack I plan to hard-wire 4 or 5 4X4 metal boxes with 4 plugs ea. I would like to add some sort of protection to the main feed, perhaps even some sort of large ups. I have had power spikes and brown-outs in the past that have taken out equipment. This I would like to resolve as I'm re-populating with mostly new equipment. I'm open to suggestions and I'm sure here I'll get my share. |
Hey Chip. One comment I would like to make about your proposed setup is that you shouldn't run you A/C line in the same conduit with the RGBHV. Any signal lines should not run parallel with power. Random crossing is ok. Just a suggestion.
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Fri Feb 15, 2008 10:09 pm Post subject: Re: Equipment move, need a in-line pwer conditioner, or not. |
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| macgyver655 wrote: | | stefuel wrote: | | I am in the middle of a complete equipment relocation. I will be running a dedicated power line to that location. I have two choices, extend the 20 amp dedicated circuit that powers the projector or run a second line direct to the rack. I can bump the amps to 30 as the feed to the projector is 10 ga. wire and snake 12-2 greenfield right in the same conduit as the RGBHV to the rack. Inside the rack I plan to hard-wire 4 or 5 4X4 metal boxes with 4 plugs ea. I would like to add some sort of protection to the main feed, perhaps even some sort of large ups. I have had power spikes and brown-outs in the past that have taken out equipment. This I would like to resolve as I'm re-populating with mostly new equipment. I'm open to suggestions and I'm sure here I'll get my share. |
Hey Chip. One comment I would like to make about your proposed setup is that you shouldn't run you A/C line in the same conduit with the RGBHV. Any signal lines should not run parallel with power. Random crossing is ok. Just a suggestion. |
My thought was that using greenfield, I would avoid any problems because it's inside it's own metal jacket that grounds on both ends.
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Fri Feb 15, 2008 11:08 pm Post subject: Re: Equipment move, need a in-line pwer conditioner, or not. |
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| stefuel wrote: | | macgyver655 wrote: | | stefuel wrote: | | I am in the middle of a complete equipment relocation. I will be running a dedicated power line to that location. I have two choices, extend the 20 amp dedicated circuit that powers the projector or run a second line direct to the rack. I can bump the amps to 30 as the feed to the projector is 10 ga. wire and snake 12-2 greenfield right in the same conduit as the RGBHV to the rack. Inside the rack I plan to hard-wire 4 or 5 4X4 metal boxes with 4 plugs ea. I would like to add some sort of protection to the main feed, perhaps even some sort of large ups. I have had power spikes and brown-outs in the past that have taken out equipment. This I would like to resolve as I'm re-populating with mostly new equipment. I'm open to suggestions and I'm sure here I'll get my share. |
Hey Chip. One comment I would like to make about your proposed setup is that you shouldn't run you A/C line in the same conduit with the RGBHV. Any signal lines should not run parallel with power. Random crossing is ok. Just a suggestion. |
My thought was that using greenfield, I would avoid any problems because it's inside it's own metal jacket that grounds on both ends. |
"Greenfield" is a tradename for armored cable...
Armored cable, with a good drawing: http://www.freepatentsonline.com/6906264.html
Shield gounding should be on one end only, otherwise potential differences can cause humbars (among other artifacts.) Ideally, equipment at both ends will have isolated local grounds, but that's not always possible.
_________________
"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Feb 15, 2008 11:45 pm Post subject: |
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Like any shielded cable, that shielding has its limits. If the shielded A/C cables leaks, lets say .5% per inch then each inch multiplies leakage as it travels along the signal wires. Any books you read on signal transfer cables will indicate not to run parallel with current lines. I'm sure you could give it a try and maybe it will work fine but if you have any lines or artifacts in your pic when your done I would suspect that cable issue first. You never know, it might work fine. It was just a suggestion.
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Mon Feb 18, 2008 1:38 am Post subject: |
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I finally got around to doing a load calculation. It came out higher than expected. I knew the PJ was 800 watts. I was shocked to learn that my AVR was sucking up 700 watts. Add to that all my home automation stuff and theater support equipment and I'm pushing 2,500 watts. Wheeewwww, no wonder that room is so hot.
Wow, if I had a side by side stack and a blender, I'd be pushing 4,000 watts 
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Chip
A Barco is only a AmPro with training wheels
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stefuel
Joined: 07 Mar 2006
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Location: Green Harbor MA USA
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| Posted: Mon Feb 25, 2008 1:35 am Post subject: |
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Well my gigantic ups will be here on Friday and that day can't come soon enough. We had a power outtage today and it took out a fuse in power supply of my dvd player.
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Chip
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