240V Breaker In Single Panel Space? - Electrical - DIY Chatroom Home Improvement Forum

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Old 07-23-2011, 06:05 PM   #1
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240V breaker in single panel space?

This is probably a dumb question, but here goes...

I have a Q06-12L-100S subpanel, which has six spaces for breakers. So, I could put in 12 half-size breakers. But, I'm short on space and I need to add a 240V circuit.

Do I have to use two of my six spaces for a 240V breaker? Or, is there a breaker that fits into a single space?



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Old 07-23-2011, 06:10 PM   #2
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You will have to use two spaces for that 240 Volt circuit. That will leave 4 spaces, or up to 8 single pole circuits, if you use tandem type breakers.

Square D does not make tandem type QO 2-pole breakers these days.



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Old 07-24-2011, 07:56 AM   #3
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Thanks for the explanations. So, what would you suggest I do if I need more space? Would I need to change out the whole panel? Or, would a "quad breaker" be the way to go?

I only need one 240V circuit. And, all the existing spaces already have tandems, except one.


Last edited by mn1247; 07-24-2011 at 08:08 AM.
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Old 07-24-2011, 09:15 AM   #4
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A quad is definitely the best solution to that problem, if they make a suitable quad for that panel. You can use the two other poles that you're not using for the 240V circuit for something else.
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Old 07-24-2011, 10:09 AM   #5
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I have never seen a QO quad. I think the solution would be to install a larger panel. I they use the same brand all the parts can transfer over.
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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