Tandem breaker to replace a single breaker

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Old 04-11-19, 10:26 AM
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Question Tandem breaker to replace a single breaker

Going to put in a 220 breaker for ac / need space so I was going to put in a tandem breaker I have a empty space . The circuit i will be moving is just a general lights on it. So the hot from that circuit will go to the new breaker [tandem] along with the breaker it is replacing giving me two spots for my 220 double. The neutrals from the two circuits I leave ago they stand on the neutral bar where there at [ this is a 100 amp main with no elect heat, stove or hot water tank ] I know two circuit on the same phase the amps add up so since these two circuits are on the same phase , would each circuit neutral see what it is pulling. So lets say one circuit is pulling 5 amps [lights] and the other is pulling 4 [living room] the total is nine but 4 on one neutral and 5 0n the other since each circuit has its own neutral and the two hot from the two circuits will go to the tandem breaker. Is the neutrals ok to stay where there at?
 
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Old 04-11-19, 12:54 PM
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You have two independent circuits with their own neutrals. The neutrals have no bearing whether or not a single or tandem breaker is used. Leave the neutrals right where they are.

If you had a problem where you knew the panel was heavily loaded on one leg..... and you were putting two circuits on that same loaded leg.... then you'd need to worry. From your description you don't have any problem like that.

Be sure the panel can accept tandem breakers. The diagram of accepted breakers is usually on the label inside the panel door.
 
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