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Old 10-15-2007, 07:35 AM   #1
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piggyback breakers

A friend and I are both rewiring our houses and needed more breaker space. We decidede to go with piggyback breakers. The question is, can you use both hots on a piggyback breaker to power a baseboard heater? Basically drawing 220 out of 1 single pole slot. Any help is alwayse appreciated

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Old 10-15-2007, 09:29 AM   #2
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piggyback breakers

A tandom breaker fits the same space as a full size breaker, therfore you will only have 120 volts from each connection.
This may not hold true for a GE panel in some cases.

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Old 10-15-2007, 11:13 AM   #3
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piggyback breakers

So I should use the double pulls for the heat and the piggybacks for outlets and fixtures then?
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Old 10-15-2007, 12:19 PM   #4
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piggyback breakers

Yes, double poles would be required for the 240V loads. Be advised, you can only use the "piggyback" breakers if your panel accepts them. There should be information on the inside of the panel door that will tell you what breakers are acceptable. A designation such as HOM3040 (just an example) says that the panel will accept 30 breakers for 40 circuits, meaning you can use up to 10 tandem breakers.
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Old 10-16-2007, 11:30 AM   #5
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piggyback breakers

Does the 42 circuit max rule apply to tandem breakers. I would think it does. If so you would have to count each tandem as two breakers. Anyone else?
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Old 10-16-2007, 11:46 AM   #6
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piggyback breakers


Thats what Househelper just said. Modern panels state the number of tandems that you can use and not exceed the 42 circuit max.....ie.... a 30/40 panel. 30 spaces 10 of which will accept tandem breakers. 20 full size or 10 doubles...plus 20 more circuits using tandems.
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Old 10-16-2007, 02:41 PM   #7
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piggyback breakers

I wanna see a link to this 42 space single phase panel . 40 spaces is the realistic max in residential. I wonder how long it will take for manu. to make larger panels for single phase services after the rule goes away in '08. I wanna see 126 space resi. panels
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Old 10-17-2007, 10:50 AM   #8
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piggyback breakers

Im rewiring the lights 4 of them so I dont need a lot of extra space. Going from knob in tubing to code. Learning the hard way too Its hard to do this when your living in the house your trying to remodel with 4 kids.

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