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A little help with switch selection
Posted: Fri Aug 26, 2016 11:55 am
by Boom
We are working on setting up a remote building with connectivity and security cameras. The original specs only called for 2 cameras for we installed a wisp switch 6 and have been happy. Now they want to add an addtional 3-4 cameras @ 7.5w each so we will need a bigger switch. The switch will need to power 5-7 cameras, a Nano beam 24v and a Unifi Outdoor+ 48V. We have 110v about 30 feet away and can put a DC power supply in the box or run 110 up to the switch enclosure.
Any suggestions on a switch and small to medium enclosure for it?
Re: A little help with switch selection
Posted: Fri Aug 26, 2016 12:02 pm
by sirhc
So if you want a good answer then you need to provide me more information.
So this building has no AC power in it and you will be bringing AC power to the building from 30+ feet away?
Is there a tower involved?
Please describe the site a little more in detail please.
Keep in mind grounding so please read these posts below:viewtopic.php?f=30&t=1816viewtopic.php?f=30&t=188viewtopic.php?f=30&t=1429viewtopic.php?f=17&t=1786&start=30#p13447 <== This last one talks about bringing AC power from a distance
Re: A little help with switch selection
Posted: Fri Aug 26, 2016 12:06 pm
by Boom
The building has 110v power about 30 feet from the location of the equipment. Its at ground level and around the corner but it's there. We will be running PVC conduit to the equipment location.
The equipment is is located on the side of a steel building about 15 feet up. This location is the mounting point for the AP, Wireless Bridge and the Switch.
Re: A little help with switch selection
Posted: Fri Aug 26, 2016 12:21 pm
by sirhc
Why are you wanting to use a DC switch?
If you're mounting a NEMA box to hold the switch I would use an AC model.
The WS-10-250-AC would work well.
Since you are bringing AC power to the box from a distance I would consider driving in a new ground rod below your box for yourself and follow the instructions in this post and NOT bring Earth Ground with the AC cable from a distance.
viewtopic.php?f=17&t=1786&start=30#p13447I would install a vented NEMA box, there are many on the market:
https://www.google.com/?ion=1&espv=2#q= ... MA+box+buyYou can also find deals on Ebay like this one:
http://www.ebay.com/itm/INTEGRA-NEMA-3- ... SwU-pXsPWNTHen I would put in a side top and bottom vent like these:
https://www.google.com/?ion=1&espv=2#q= ... 6975763729THe vents do not need to be big just enough to allow some airflow.
Re: A little help with switch selection
Posted: Fri Aug 26, 2016 12:54 pm
by Boom
Thanks for your help.
That was close to what we came up with but I wanted to make sure.
Also what is the max POE wattage on the WS-10?
Re: A little help with switch selection
Posted: Fri Aug 26, 2016 1:05 pm
by sirhc
Boom wrote:Thanks for your help.
That was close to what we came up with but I wanted to make sure.
Also what is the max POE wattage on the WS-10?
Well the description on the web site says 250 watts
The part number breaks down like this for WS-10-250-AC
WS = WISP Switch
10 = 10 ports
250 = 250 watts
AC = This is an AC powered switch