How do you calculate the cable cross-section?
How is the cable cross-section calculated?
To calculate the cable cross-section (A) for 12V consumers, you can use the following formula: A = (I * 0,0175 * L) / (fk * U). 0,0179 gives the specific resistance of copper in ohms x mm²/m.
How to calculate the line length?
To determine the allowable length of wire or cable, for DC and single-phase AC, the length is divided by 2 because current flows back and forth in the L and N conductors, respectively.
Which cable cross-section do I need?
In normal domestic installations, each wire must have a cross-section of at least 1,5 mm². Such lines are then secured with a 16 ampere (A) fuse. Stronger currents, such as on an electric stove, must be connected with stronger cables, here at least 2,5 mm² are required.
What happens if the cable cross-section is too large?
A conductor cross-section that is too large makes the cable unwieldy and expensive. In contrast, a cable cross-section that is too small often leads to damage. It is possible that there is not enough voltage, which means that only reduced power is available. In addition, there is a noticeable warming.
4.6.5 Select cable cross-section under ideal laying conditions
40 related questions found
Which cable cross-section at 32A?
At 32A, 6 mm² should actually be used, 4 mm² is a bit tight there.
Which cross-section at 400V 16a?
The two 400V lines, each 16 amps, with a cross section of 2,5mm.
How long can a 3×1 5 cable be?
According to DIN VDE 0100 Part 520, AUtotal = 4% is permissible between the Hmpan house connection and the connection point of the consumer. This results in a maximum cable/line length of 13,65 m!
Which cable cross-section at 63A?
The cross-section always depends on the power requirement, the cable length, the type of installation and the fuse. For 63A, the result is 10mm2 to 25mm2. It should be noted that a minimum of 16mm2 is always required for supply lines from the house connection box to the meter location.
Which cable cross-section at 22 kW?
The prescribed conductor cross-section for supply lines for 22 kW wall boxes and 32 amps is at least 6 mm².
How many watts on 3×1 5 cable?
secured, 3600 watts are possible.
What kind of cable do you need for a 16a socket?
Most common in domestic installations are cables in which each core has a cross-section of at least 1,5 mm². These lines are then protected with a 16 ampere (A) fuse. If stronger currents have to flow, for example on an electric stove, stronger cables have to be connected.
How long can a 3×2 5 be?
A single-pole 16 A LS with «K» tripping characteristic is to be used, the routed cable is NYM-J 3×2,5 mm². Roughly speaking, the line resistance must not exceed 1 ohm. Since forward and return conductors are required, the maximum line length is 70 meters.
How many sockets on a 16A fuse?
With normal use of the socket in an apartment and the protection of the circuits with 16 amps each, the following empirical values are often used. Expect an average load of 200 to 300 watts per single socket and 300 to 500 watts per double socket.
Which conduit for 5×2 5?
I would move a 7×1,5 or 5×2,5 into an M25. Long distances (over 15m) I would also tend to the M25.
Which cable for 32A socket?
Cable cross-section of the H07RN-F at 16A at least 2,5mm² and at 32A at least 4mm², more like 6mm²!
Which cross section at 2 KW?
As a rule of thumb for the cable cross-section of the house installation, you can remember: 1,5 mm² for lighting and sockets with less load. 2,5 mm² for heavy-duty sockets (tumble dryers, dishwashers, boilers, etc.) 4 mm² for electric stoves and more powerful machines.
How long can a 5×2 5 cable be?
A 16A-CEE power connection is required. In order to lay the connection at the desired location, 60 m of cable must be laid. The list above shows that a 16A CEE extension cable 5 x 2,5mm² can be used up to a maximum of 30 m.
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