ᐅ 3x1.5 mm² or 5x1.5 mm² NYM cable in the roof cavity for LED spotlights?
Created on: 25 Jan 2019 21:26
H
hauspeter
I want to run an electrical cable all around the roof box to operate LED spotlights.
What are the advantages and disadvantages of using 3-core or 5-core cables for lighting?
What are the advantages and disadvantages of using 3-core or 5-core cables for lighting?
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Obstlerbaum26 Jan 2019 22:35seat88 schrieb:
Maybe you want to connect a motion sensor or twilight switch, so choose 5 wires Why five wires? Motion sensor to pulse relay, which switches the lights on. Done.
The idea mentioned by [USER=42376]@Fuchur to use 2.5 Quad cable is not unreasonable.
A disconnection of the circuit breaker within a specified time in case of a short circuit must be ensured.
As the length of the cable increases, so does the resistance, which is made up of the distance from the last appliance to the breaker plus the supply network impedance. This combined resistance is called the loop resistance.
This can be measured with the appropriate testing equipment.
Therefore, make sure your electrician creates a test report for the electrical installation.
If there is a fire, newspapers often report: Fire caused by a short circuit — this is a cause many people have heard of.
This is one of the possible causes.
A disconnection of the circuit breaker within a specified time in case of a short circuit must be ensured.
As the length of the cable increases, so does the resistance, which is made up of the distance from the last appliance to the breaker plus the supply network impedance. This combined resistance is called the loop resistance.
This can be measured with the appropriate testing equipment.
Therefore, make sure your electrician creates a test report for the electrical installation.
If there is a fire, newspapers often report: Fire caused by a short circuit — this is a cause many people have heard of.
This is one of the possible causes.
H
hauspeter30 Jan 2019 13:17Obstlerbaum schrieb:
too much never harms, but what are you planning to do with the five conductors? I want to extend the cable for the outdoor lighting to the front or to the entire soffit area. It will be controlled by a light switch in the hallway.
H
hauspeter4 Feb 2019 13:10Knöpfchen schrieb:
The idea from @Fuchur to use 2.5mm² (about 4 AWG) four-core cable is not unreasonable.
A circuit breaker must trip within a specified time in case of a short circuit.
As the length of the cable increases, so does the resistance, which consists of the length from the last device to the circuit breaker plus the supply network impedance. This is collectively called the loop impedance.
This can be measured using an appropriate testing device.
Therefore, make sure your electrician produces a measurement report for the system.
If there’s a fire, the newspaper will say: Fire caused by short circuit, which everyone has surely heard before.
That is one of the possible causes.H
hauspeter4 Feb 2019 13:12And which cable should I use to connect to the GU10 socket? In a video, I saw someone use the rather stiff NYM cables only for the supply line and then a flexible cable to connect the GU10 sockets.
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Obstlerbaum4 Feb 2019 14:41hauspeter schrieb:
And which cable should I use to connect to the GU10 socket? In a video, I saw someone using the rather stiff NYM cables only for the main supply line and then a flexible cable to connect the GU10 sockets. Do I understand this correctly: NYM -> terminal -> intermediate cable -> terminal -> GU10 socket? So if there is enough cable length, what's the point of all that?
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