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Numbering of circuit breaker

I have always though that the numbering on the circuit breaker is in as such that the input wire (supply line) is 1 (3,5,7) and the output wire is 2 (4,6,8). However today I discovered that in my panel the input wire is 2, and the output wire is 1. Is this correct? And does it matter?

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  • Does the breaker have explicit LINE/LOAD type markings on it? – ThreePhaseEel Dec 30 '20 at 23:22
  • No I thought that the numbering serves this purpose – Rubus Dec 31 '20 at 0:07
  • Except in the special cases of DC breakers with permanent magnets, and some breakers with electronics, it does not matter and will usually specify so several pages into the datasheet. – SomeoneSomewhereSupportsMonica Dec 31 '20 at 4:02
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It can go either way. often the feed to a panel goes "backwards" through the main breaker (compared to the other breakers).

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