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Old 10-01-2008, 09:20 PM   #1
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I have a Square D Homeline panel. It says it is a 30/40 panel. So it has 30 spaces and can accept 40 circuits. I can see it has 30 spaces for breakers but what does the 40 circuits mean? Does it mean that you can use those "twin" breakers in some of the spaces which will give you an extra 10 circuits if needed? If so, is it the bottom spaces that allow the use of the "twin" breakers? I noticed that the "HOT" busses at the bottom are shaped a little different than the ones at the top. Does that mean that you should install any 220 breakers at the top so you can save the "twin" friendly spaces for single or "twin" breakers?

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Old 10-01-2008, 09:22 PM   #2
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Yes it means that it will take ten of the split mini breakers. Usually there is a diagram in the panel itself that shows what spaces are rated for the split mini breakers and most of the time its at the botton

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Old 10-01-2008, 09:26 PM   #3
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So I shouldn't install 220 breakers in those slots right? Would it be smart to save those spaces and use them last?
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Old 10-01-2008, 09:32 PM   #4
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Originally Posted by DVLCHLD View Post
So I shouldn't install 220 breakers in those slots right? Would it be smart to save those spaces and use them last?
The ones at the bottom are the only positions that will accept the 'twin breakers', but a standard 1 pole or 2 pole breaker will fit there also. It's your choice if you want to save them for last/later, but it's a good idea to try to.
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Old 10-01-2008, 09:36 PM   #5
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Thank you.
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Old 10-02-2008, 04:09 AM   #6
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If your main breaker is located the top of the standard breakers then the twiner or tandaem breakers will be found on the bottom 5 row of breakers but make sure you double check the type of twinner breakers due some of the manufacter can make two verison of twinner breaker.

For the Homeline series twinner breakers the catalog numbers will be HOMT2020 this mean twin single pole breakers 20 amp each.

You have to watchout some can have both 15 and 20 on the breaker so it may get ya if not carefull.

Merci,Marc
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Old 10-02-2008, 08:33 PM   #7
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Thanks, yea the bottom 5 are the ones that accept the "twin" breakers. I think I'll have plenty of spaces without even using them but it will be nice to know they are there.

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