ECN Forum Forums Photo Discussion Forums Photos for General Discussion Some Nice Work from Germany

Stunning work, Roland, and welcome to ECN. What is the red wire (?), running inside the insulation and parallel to the copper pipe in pic. 3 - by the motorised valve?


Alan

Actually Jenbacher is Austrian, not German. They make everything up to railway motorcars.

That's an EIB install! It's a bus system. Basically all switches are push buttons paralleled on a low voltage bus, cooresponding with the "actors" in the panel by logic addresses. The entire thing is programmed into the computer first and during startup the laptop "tells" every piece of equipment what it's supposed to do... both flash the software and assign each piece of equipment it's specific address.
Helluva complex, especially when you're new at this, but supposedly very modular and easy to alter.
I'm not really sure I like that bus concept at all. For residential work IMHO it's _waaaaayy_ over the top! Neat looking though!

DIN rail panels basically only offer standardised mechanical mounting, everything else is modular. There are breakers, switches, contactors, dimmers, receptacles, RCDs, bell transformers and whatever else. The line side wiring can either be done with bus bars (both available in single and three phase versions, can easily be cut to length and unused terminals can be removed, for example using Neutral switching breakers you remove the tab of the phase bus at the neutral terminal).
The only downside is the usually limited wiring space. DIN rail panels usually sqeeze a lot more devices in the same size panel than US panels.

Alan

Could be heating tape?

Hi all,

Thanks for replies. I can no English so some expressions could be curios.

I have a question for you. How is built the power supply system in the USA? In Germany it is with 3 phases and neutral. It works with 3*400/230 V AC / 50 Hz, 3 phase current. It is TN system.

SvenNYC:
The radio only is for FM. You can find more info at www.gira.de.

Allan Belson:
The red wires are for interswitchbord line.

Texas Ranger:
It is not a EIB system, these are modules of Theben (Theben Luxor System- www.theben.de).
Do you mean Jenbach in Austria near "Achensee"?


Bye, bye
Roland

North America uses 120/240V single phase in most residential services (in a 120-0-120 setup), I think what you call TNC-S. The neutral is earthed at the utility transformer, and also at the point of service disconnect in or near the home. You can see many pictures of services here, both good and bad.

Hi there Roland,
Welcome to ECN!.
This work is very neat indeed.
Nice to see proper labelling on each of the sub-circuit wires.
I've used quite a bit of Hager stuff down here in New Zealand.
I have to say that I like the DIN Rail equipment a lot, it's easy to replace breakers, even with the panel live if you have to.
And in relative safety too.

In addition to classicsat's info; in commercial, industrial and even some large apartment complexes we use 120/208 3phase wye. Industrial settings, with lots of lighting and large motors, will also have 277/480 volt 3phase. In our aparment complexes, seldom are all 3 pheses brought out to individual aparments. It is usually 2 of the 3 phases set up for 120V phase to neutral and 208V phase to phase.

Hello Roland, and welcome to ECN. That's some nice neat work!


Just to expand upon classicsat's comment, the U.S. system most common for the average individual house is a 3-wire 1-phase system. The transformer has a 240V winding with a center tap which is grounded and brought to the house as a neutral.

There are then two line busbars in the distribution panel. Circuits for lights and regular wall outlets are then wired between one line and neutral to give 120V, the load being distributed evenly between the two sides.

Large appliances such as dryers, stoves, heating, and air-conditioners run on 240V and are connected via 2-pole breakers to both live sides of the supply.

Grounding (earthing) is indeed what would be classed as TN-C-S in Europe. TT systems are not used in the U.S., and in fact are prohibited under the American NEC (National Electrical Code).

There are a good many significant differences between grounding and bonding arrangements in North America and Europe.

Oh, didn't notice that. Looking closely the modules do look different.


Yes, that should be right. Tirol.

[This message has been edited by Texas_Ranger (edited 11-14-2005).]