I’m aware that these Square D breakers are rated for two wire connections. Question: Can both connections be made on one side of the screw terminal or should they only be made on either side of the screw terminal? Any of you electrical gurus out there tonight?
Sorry, no arrows in my photo. Top breaker, left column contains the two wires below the screw.
I worked for a Square D electrical distributor for 22 years and the Square D rep is a personal friend. He says QO and Homeline breakers are rated for only on wire period. Just because the wire can go on either side of the tab does NOT make it rated for two wires.
Ok I went to the Square D office this morning and we checked the cat. QO and Homeline breakers 10 to 30 amp, single and double pole can have (2) 14-10 gauge wire. All 3 ploes and other sizes can only have one.
Yes, the newer Sq D is rated for (2) conductors (One on either side ) like in the picture we had last weekend. Just make sure they are seated correctly into the breaker and not angled or cross seated and it is fine.
I was just in a class and the instructor was discussing double taps. I stated unless the breaker is rated for 2 conductors. The instructor told me in no uncertain terms I was crazy. I knew of the SQ D breaker. I have viewed this thread. Does anyone have a spec sheet? I have looked at the SQ d website and can’t find anything Thanks
I am answering your question by splitting it into two questions.
Does the code prevent terminating two conductors to a single branch circuit breaker?
The code does not prevent connecting two conductors to a single branch circuit breaker provided that the breaker is approved for that purpose. As you suggest, the Square D 15 - 30 amp single pole Type QO breaker is approved for the termination of two conductors.
Does the code prevent using a branch circuit panelboard enclosure as a junction box or a raceway?
The code states that the enclosure shall be permitted to be used as a junction box if wiring is being added to an enclosure forming part of an existing installation and the conductors, splices and taps do not fill the wiring space at any cross-section to more than 75% of the cross-sectional area of the space.
Ontario Electrical Safety Code Rules 2-034, 12-3034.
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My original question was regarding double taps in residential electrical panels, whether they are permitted or not. The ESCode states they are not, but I have been seeing many double taps and there has been a ESA sticker on the panel. I am also aware that Square D breakers allow two wires, but what is ESA opinion?
I had our ESA inspector tell me last week that Stab-lok with double tap of 14 ga and 18 ga. was okay (from more than one ESA inspector). But if you are familiar with Stab-lok you will know there is no way the terminal plate will make contact with 18 ga if 14 ga is under the terminal. I think they are really wrong to permit double taps with Stab-lock especially with two different sized wires. Fwiw.