CCTV Power supply as 12VDC source

[PaulD]

I have read other threads where people have looked at options to get rid of wall warts as well as some thoughs on use of a CCTV power supply for a generic power supply with multiple outlets. However, I never did see anyone comment that they actually used a CCTV power supply or any other similar source with multiple outputs along with any pro/con comments. To do this, I have been looking at several different models and options. My intent is to get a unit that ....
a) is UL listed
has 16-18 outlets (or 2 each of the 8-9 outlet models)
c) has master fuse and also provides at least 1000ma PTC protection on each outlet (no fuses). If a device requires more than 1000ma, I will use multiple outlets in parallel as required.
d) has minimum of 10A total capacity. More is desired but the higher amp units tend to use a power supply with a fan to make noise. May decide to use multiple smaller units to get a higher total amp capability to avoid fans.
e) is reasonably priced. The units I have seen from typical HA sources (HAI, Leviton, etc) seem to be too high priced for the limited capability they offer. I have not see any capability they offer that I need that is not provided in a CCTV power supply.

I am looking for any cautions or issues I need to be alert for before I pull the trigger and install a CCTV power supply as my single 12VDC power source to support my 12VDC requirements in in HA closet. Also interested in any suggestions on specific power supplies that anyone has found to be especially good.

 

[CollinR]

I do it all the time however 10 amp is a tall order, obviously I prefer my house PS but it's 8 output, 8amp, 800ma PTCs. Vented but no fan, one of the things I really like about them is it's super simple to mount, you need not disassemble the thing to mount it unlike the chinese and PPP supplies. $80 for $30 more you can 2 distribution panels in the same can so 16 outputs at 8 amp.

 

[brotsten]

I use a couple of these. I picked them up cheap on eBay.

Brian

 

[Digger]

To have an 8 or 10 amp load you would need a significant battery backup (the faster you discharge the battery the less of its capacity you can utilize). Also these power supplies often cannot recharge that much battery backup (there are a few that have a 3 A or so charge current but not many).

I am currently working with a Power Supply mfg on a 7 A supply. To get 24 hours of battery backup it needed three 7 Ah batteries in parallel for about a 500 ma load and then 6 A in alarm for 4 minutes to meet NFPA and UL requirements for fire alarms. The first time we tried the test it didnt make it at the very end of the test and the charge current/time curve is being adjusted.

A power supply UL Listed for CCTV may not have been designed to meet requirements for Burglar for Fire system requirements. For other applications where battery backup is less critical then something like this could work fine.

I am actually experimenting on something similar in my house to have 6 Vdc, 9 Vdc, and 12 Vdc with battery backup and one transformer (not 3). Total current will probably be about 4 A or so (1 to 1.5 each output) to run my router, two ethernet switches, and an accesspoint. I have a 100 VA 24 Vac transformer and 3 individual power supply modules (similar to the ELK 6/12/24 unit). Each will have two 8 Ah batteries in parallel and take over a day to recharge completely. This will give me about 8 to 10 hours of realistic battery backup (maybe a little more depending on a few variables).