Other Breaker Compatibility with Square D?

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Old 02-14-20, 01:29 PM
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Other Breaker Compatibility with Square D?

I have a Square D panel with a Square D breaker part number " homt220240cp". its a quad tandem breaker dual 20a and dual 40a. 40a for oven.
I need to replace it with a homt230240cp but cant find anything nearby. Its shown on Home Depot but special order and weeks to get.

Ive read that only Square D breakers can be used in Square D panels.

So is there any compatible mfr breaker for my panel that will do the homtt230240 job?

Reason for change form 20 to 30 amp is 20a to small for my new table saw.

Thanks for any tips!
 
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Old 02-14-20, 01:41 PM
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That is Square D homeline series and Eaton Type BR, GE THQL, Murray/Simens Type QP will fit and work. HOWEVER, you shouldn't be using them because they are NOT APPROVED to use with your panel.

This is the reason why you are only supposed to use Square D Homeline only.

There is UL Classified breaker from Eaton that can be used on multiple panels from different manufacturers, but I don't think they come in quad.

If it is not something urgent, you should just order the correct breaker in the first place.
If it is something urgent, just get 2 pole breaker and remove circuit that is not urgent and use it until you get the correct breaker.
 
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Old 02-14-20, 01:50 PM
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What is the wire gauge of the 20 amp circuit as that may also have to be increased in size?
 
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Old 02-14-20, 02:28 PM
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what ive read is that Square D makes their panels to not allow mfr other breakers.
I talked to the company that originally put in the 220 in 2018. They said they would probably have to increase the gauge wire.. Only a 6ft run from box go plug and about 1.5 hr job and cost me
 
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Old 02-14-20, 02:37 PM
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lambition, I see what your saying. to get up and running quickly, remove the entire dual quad 20-40 block and replace the 20s (they are on the outside) with single 30s. The center 40a section will be empty until I get the new breaker to install. I attached a picture of the current breaker. The 2 40a in the center are for the oven and I can do without for a few days but would like to be my saw up and running.
 
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Old 02-14-20, 03:03 PM
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Instead of 2 single 30s, install 2 pole 30. Although 2 single 30A will work, they will not trip simultaneously when overload occurs. So 2 pole is the safest way to supply 240V even if it is temporary breaker.
Single or 2 pole breaker will take up whole space, so you will not have empty space in the middle.

If your existing wire is only 12 AWG you can put this on 20A breaker only in most cases, but since you are putting motor load I believe it maybe allowed. However, I don't recall exact rule.
 
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Old 02-14-20, 05:13 PM
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If the saw is cord and plug, the 30A circuit needs to be #10Cu wire with a 30A outlet. The only way to have a circuit protected at a higher amp rating than the wire is to be a dedicated circuit hardwired to the motor. But the supply conductors still need to be sized at 125% of the motor load.
 

Last edited by pattenp; 02-14-20 at 06:04 PM.
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Old 02-15-20, 09:46 AM
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This is what sometimes happens when you skimp on price and put in a panel that's too small. I believe I'd check with a Square D distributor and see if they either have the breaker in stock or can get it quickly. Distributors usually have a few more avenues to get items much more quickly than a retail big box store.
 
 

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