Is an extra circuit / residual current device really necessary for the office?

  • Erstellt am 2020-06-09 17:23:46

knalltüte

2020-06-09 19:46:35
  • #1
But now I am curious about THAT explanation...
 

Tego12

2020-06-09 19:46:59
  • #2
Why is a separate RCD necessary for the computers? Normally, the computer is just standing somewhere, plugged into a regular socket... do the hairdryer and toaster also each get their own RCD? I just don't understand that. And why does the required space in the control cabinet increase so drastically with 15 additional sockets? As I said, either it's completely poorly planned, or a rip-off.

Regarding CAT without conduit in the wall: I'm also curious why one should do that.

And there is absolutely nothing wrong with GOOD power strips and proper use. Of course, many want to avoid that visually in new buildings as much as possible, but that's just an aesthetic issue.
 

rick2018

2020-06-09 19:47:43
  • #3
Sorry, but why should Cat cables go into the wall without a conduit? Total nonsense. And you can also measure without a patch panel. Surely you won't get a certified protocol either. For 600€ you get a patch panel from Metz including keystones and still have money left. Should the panel also go into the office? Like with a small server cabinet or something?
 

Vicky Pedia

2020-06-09 19:50:50
  • #4


Of course, a PC does not need its own supply line, but the stove and the electric car charging station do. In general, a multi-socket adapter is not a good solution. It should always be avoided. The number of sockets physically does not matter. You just need to know that you can draw a maximum current per circuit. A standard fuse has 10A. So I can only "draw" 10A. That means 10 x 1A or 2 x 5A, etc. My PC (please don't get upset!!!! video PC) draws just under 1kW.
To explain: 240 volts x 1 ampere = 240 watts.

And btw: There can be no fire risk with a properly installed system. The built-in protective mechanisms must reliably prevent that!!!
 

knalltüte

2020-06-09 19:54:50
  • #5
for 600 € you get

19" wall cabinet, 8-12U: 100€ (basic) up to 220€ (better)
MetzConnect modular patch panel including 24 Keystone modules: 180 Euro
Zyxel 24 port GbE switch, manageable: 130 €
a handful of CAT6a / PIMF patch cables in assorted colors and with Hirose connectors

and if you buy all that stuff cheaply, you also get 2 hours of installation time included in the 600

So if the electrician nails the CAT cables into the wall without the required protective conduit, he should pick them out again afterwards and lick up the dirt from the floor
 

blackm88

2020-06-09 20:22:19
  • #6
In the house, there must be a main protection device before the meter, i.e. the main fuses. For this, a fire protection switch should (must) be installed in a wooden house. For photovoltaic systems, a surge protection device must be installed. Then at least 2 RCDs. And additional space for expansions (e-car), more circuit breakers, energy management, possibly actuators or a timer switch,... Of course, the/a PC has 700W. Have you ever measured what it really needs? What is your current annual kWh consumption? 700W is not always the input power, sometimes also the output. A normal office PC doesn’t draw more than 40W (thanks to SSD and Intel power management). I currently have a few ESXi servers for virtual desktops at the company, each with 2x1.6kW, but the Tesla graphics cards are really brutal in extended tests... back to the topic: why more sockets = more space in the cabinet, I cannot understand. The cables don’t converge in a star pattern, nor are there groups implemented. In our case, each room has its own feeder with separate protection. Then the stove separately ... But that is actually a matter for the general contractor and electrician. We didn’t have to pay extra for the larger cabinet etc.
 

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