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Which wire is negative red or black 2024?

Ethan Hall | 2023-04-25 02:43:03 | page views：1833
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Isabella Wilson

Studied at the University of Melbourne, Lives in Melbourne, Australia.
In DC circuits, the positive pole is usually marked red (or "+") and the negative pole is usually marked black (or "?"), but other color schemes are sometimes used in automotive and telecommunications systems.
2023-04-29 02:43:03
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Julian Davis

QuesHub.com delivers expert answers and knowledge to you.
In DC circuits, the positive pole is usually marked red (or "+") and the negative pole is usually marked black (or "?"), but other color schemes are sometimes used in automotive and telecommunications systems.
Electrical polarity - Wikipedia
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