Question
Which of the following cables is NOT suitable for 3 -phase equipment?
Ask by Simmons Frank. in Singapore
Jan 23,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The second cable option is not suitable for 3-phase equipment.
Solution
The cable
is NOT suitable for 3-phase equipment.
Explanation:
For 3-phase equipment, you typically require three phase conductors along with a neutral or protective conductor (CPC). Let’s evaluate each option:
-
- Suitable: Contains four conductors, which can accommodate three phases plus a CPC.
-
- Not Suitable: Only provides two phase conductors, which is insufficient for a three-phase system that requires three separate phase conductors.
-
- Suitable: Offers four individual conductors, suitable for three phases plus a CPC.
-
- Suitable: Similar to the first option but with different insulation, still accommodating the necessary conductors for a three-phase setup.
Therefore, the second option does not provide the necessary number of phase conductors for a three-phase system, making it unsuitable.
Answer:
The second cable option with 2 × 1 C 70 mm² Cu/PVC plus 35 mm² Cu/PVC CPC is not suitable.
The second cable option with 2 × 1 C 70 mm² Cu/PVC plus 35 mm² Cu/PVC CPC is not suitable.
Answered by UpStudy AI and reviewed by a Professional Tutor
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Bonus Knowledge
When it comes to 3-phase equipment, having the right number of conductors is essential. For a typical 3-phase system, you’ll need three phases plus a neutral or ground, which means you generally require either 3 or 4 conductors. The cable size with only 1 core (like the
) would only provide a single phase, making it unsuitable for 3-phase applications.
In practical scenarios, using the correct cable configuration can drastically affect not only functionality but also efficiency. Common mistakes include trying to power 3-phase systems with 1-phase cables, leading to overheating or equipment damage. Always ensure your cabling matches your system needs to avoid costly repairs!