19 INCH RACKS EXPLAINED - Penn Elcom Racks for AV, home theatre & smart home

Рет қаралды 11,013

Күн бұрын

19 Inch racks has been around for decades used in everything from computer networking to research labs. With the popularity of home automation the 19 inch rack, or av rack, forms the back bone of whole house control systems used e.g control4.
In this video, we explore everything from module sizes to how they are manufactured.
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More information
Penn Elcom 19 Inch AV Racks
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TIME STAMPS
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00:00 Where do 19-inch racks originate from?
00:60 19 Inch rack applications
01:40 Ideal for home automation applications
02:20 Rack width - 19 inches
02:40 Modular U height
03:10 Rack accessory fixings - metric or imperial
04:20 Cable entries and wall mounting
04:40 Cable management within the 19 inch rack
05:00 PDU - Power Distribution Unit
06:00 Branding options
06:44 19 inch accessory shelves
07:50 19 Inch rack drawers
08:28 Pimp your rack - LED lighting
08:40 Side panels & doors
09:10 19 Inch rack ventilation
10:16 Secret rack!
11:00 How are 19 inch racks manufactured
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📹 Presented by
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Пікірлер: 45

@scott1506 3 жыл бұрын

oh my god i can finally sleep at night knowing these racks have been explained.

@efixx 3 жыл бұрын

Rest easy!

@jamesmoon5632 3 жыл бұрын

Please do more of this smart technology please love these new videos

@HughEdwards 3 жыл бұрын

Excellent presentation, well explained. These videos are getting better and better, especially for newcomers to the industry.

@efixx 3 жыл бұрын

Thanks Hugh 👍

@wisteela Жыл бұрын

Very nice. I love the idea of a rack mounted draw. I recently found a rack cabinet in a skip which I will be using for my home network. I was also suitably pleased in a nerdy way to find rack mount DIN rails exist.

@mowcius 3 жыл бұрын

I like the flexibility of the standard 1U entry point top and bottom allowing the use of a standard brush plate for cable entry. Might have to think about Penn Elcom again in the future just for that. Where's the earth strap for the door and cabinet though?

@philipwardle6820 3 жыл бұрын

The Manchester Baby, also called the Small-Scale Experimental Machine, was the first electronic stored-program computer and was built in 19" racks. It was built at the University of Manchester by Frederic C. Williams, Tom Kilburn, and Geoff Tootill, and ran its first program on 21 June 1948. You can see a working reconstriction in the The Science and Industry Museum in Manchester.

@efixx 3 жыл бұрын

Great tip - the museum is a great day out with lots of electric stuff to see *Gordon.

@wisteela Жыл бұрын

Recently discovered that used the old 23 inch standard.

@charlieecosta5592 3 жыл бұрын

Don't forget the earthing and bonding when installing... Even the doors! 😉

@davidfaraday7963 3 жыл бұрын

Why bond the doors?

@charlieecosta5592 3 жыл бұрын

@@davidfaraday7963 BS EN 50310, also the door is generally the first thing anyone touches. High integrity earthing is also something that a lot of places insist on.

@davidfaraday7963 3 жыл бұрын

@@charlieecosta5592 I am not familiar with BS EN 50310 and am not prepared to pay £109 to find out what it says. Suffice it to say that in my experience doors are rarely fitted to rack cabinets and, when they are, they are usually glass.

@charlieecosta5592 3 жыл бұрын

Agreed its criminal that the BSI charges that money for 35 pages. It goes into the detail of configuration of earthing (like in data centres - star, ring, mesh, etc.) and makes reference to other standards... Glass is much easier! Another reason (as I understand) is to remove the build up of static away from any equipment.

@davidfaraday7963 3 жыл бұрын

@@charlieecosta5592 I am familiar with the need to segregate earth paths within equipment to minimise potential problems caused by volt drop across the impedance of a common earth path, and to keep the impedance of earth paths that carry signal currents as low as possible. However that is nothing to do with safety earthing.

@busman2000 3 жыл бұрын

Something manufactured in the First Hastings, I grew up in the second Hastings (formerly) Hicksville in Hawkes Bay New Zealand. Being a British settlement there are a lot of place names and road names that are exactly the same.

@efixx 3 жыл бұрын

We'll have to arrange a visit 😀

@modd1uk 3 жыл бұрын

You have regular Arctic fans installed, you should look at the Arctic CO (Continuous operation) fans, much better suited to run 24/7 365.

@paulmacgiollacaoine8619 3 жыл бұрын

Very cool 😎

@efixx 3 жыл бұрын

Thanks

@lawrencer25 3 жыл бұрын

Really nice video. Thank you 👍👍👍🥳🥂🕺🏽

@mikecumbo7531 3 жыл бұрын

In the TV production world we use 70” tall racks with the 19” width. 1RU(rack unit) = 1.75” tall. Equipment makers would specify gear in how many RU tall or full or 1/2 rack width.

@SeanDerwin1979 3 жыл бұрын

My town lads! When were you here? Could’ve shown you the best sights, eateries and brothels.

@efixx 3 жыл бұрын

Maybe next time 🤦🏻‍♂️

@12000gp 3 жыл бұрын

When are you free? You can show me.

@TheChipmunk2008 3 жыл бұрын

Surely everyone knew that 19" racks originated in telephony... ? 4ft 6inch was for telecomms originally... but they went for 19" for relays

@ericturnipseed8664 3 жыл бұрын

What are those fancy pants you guys wear?... do you know if you can get them here in the US?

@gazzat5 3 жыл бұрын

Work wear? You can buy them from DIY stores (in the UK), or work wear stores or retailers online. Checkout dickies.com

@johnburns4017 3 жыл бұрын

@@gazzat5 www.screwfix.com/c/safety-workwear/work-trousers/cat850376 Some have pockets on the knees for kneepads to be slotted in when working on your knees.

@johnburns4017 3 жыл бұрын

Or you can get these Cargo pants - a designer, trendy, brand based on workwear - for three times the price which would not last a week on a building site. www.ubonlinestore.com/products/khaki-regular-fit-cargo-pants

@ericturnipseed8664 3 жыл бұрын

@@johnburns4017 thank you sir

@johnburns4017 3 жыл бұрын

@@ericturnipseed8664 Those work pants are common in the UK. To look the part they tend to all have them, and sometimes with a high-viz top. www.toolstation.com/hi-vis-bomber-jacket/p42211?store=PD&mkwid=s_dc&pcrid=515847200297&pkw=&pmt=&gclid=CjwKCAjwoNuGBhA8EiwAFxomAwG01R6cJT9sWdd3x2tTyK4Gc7rS64IURXc-RQsQ6kBx0GHw7Yn3pxoCMxoQAvD_BwE&gclsrc=aw.ds

@davidfaraday7963 3 жыл бұрын

Strictly speaking what you are showing are cabinets, not racks. A rack is just two uprights, a cross piece at the top and a base. Traditionally they were made from cast iron and weigh a ton, these always had threaded holes for mounting equipment rather than cage nuts. Those used in telephone exchanges in the Strowger days were normally 4 ft 6 in wide, 19 inch was only used for transmission equipment and similar items. I've had a 6 ft high 19 inch rack in the corner of my "man cave" for the last 35 years, having them in homes isn't new.

@AndrewStrydomBRP 3 жыл бұрын

You really don't want those threaded bars, the cage nuts are far better for compatibility.

@Savagetechie 3 жыл бұрын

indeed, threaded bars are not a feature to be proud off, Thankfully Penn do still make proper racks with cage nuts.

@pahaywood1992 3 жыл бұрын

I’m an AV installer and really like pre threaded rails! What’s your reasoning behind preferring cage nuts out of interest? Guess it doesn’t matter too much if you accidentally strip the thread…

@Savagetechie 3 жыл бұрын

@@pahaywood1992 if you are mixing and matching a lot of units, that aren't as strict on spec pre threaded holes can be a pain, thread damage, if constantly swapping units is also a real issue, see also rail damage especially in mobile racks. It's amazing how often a little play in cage nuts will let you squeeze in a difficult unit.... And for really weird stuff you can cut the horizontal between 2 cage nuts and have an adjustable hole.

@AndrewStrydomBRP 3 жыл бұрын

@@pahaywood1992 In addition to what Andrew said, I have some equipment (namely server rails but I've seen it frequently elsewhere) that requires the square gaps and doesn't screw in with screws, which would mean it's impossible to fit in a threaded rack. I don't see the need for cage nuts to be that big of a deal, just get one of those removal and insertion tools and it's a breeze.

@frugalaudio 2 жыл бұрын

To each his own. In the pro audio and event production world, those caged nuts are generally considered a plague prone to failure.

@Sylvan_dB 3 жыл бұрын

Where is the uninterruptible power supply? 😉

@robertwilliamson3934 3 жыл бұрын

I hate these bloody racks don't no how many times we have altered installations to accommodate them then they fit a huge box on the wall with 1 bloody rack in it you instantly turn into Norman bates

@stephencoulthard1718 3 жыл бұрын

Not a back stop it a clamp down :) guys do some stuff with @artofsmart . also need a UPS, rear cable entry has holes to mount brush rail. Big in CCTV too.