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Why do you need T slot outlets for 20A split receptable outlets?

Why do you need T slot outlets for 20A split receptable outlets?

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  #1  
Old 01-21-11, 12:40 PM
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Why do you need T slot outlets for 20A split receptable outlets?

Subject says it all.

Thanks for replies.
 
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Old 01-21-11, 01:05 PM
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Location... location.... Canadian national code requires 20a receptacles on 20a circuits. Why the the Maple Leaf Codesters decided that would only be speculation. Code is usually pontificated not justified.
 
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Old 01-21-11, 01:07 PM
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Are T slot outlets made with higher gauge metal inside? And what is the T slot for? Is it higher amperage appliances that use the perpendicular part of the T slot?
 
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Old 01-21-11, 01:13 PM
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Most receptacles are 20a pass through. From what I have read only the plastic face is different.

Yes but they are rare at least in the US can't say in Canada. More common in commercial but when it gets near 20a it makes more sense to go to 208 or 240 or 277v.
 
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Old 01-21-11, 03:56 PM
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A 20 amp receptacle usaully is a bit stronger, but the reason for the T is that devices such as large portable heaters, air conditioners, and even air compressors will have a T shaped plug on them that will ONLY go into a 20 amp receptacle. This keeps you from plugging into a 15 amp receptacle. They have to have a way to protect circuits from being overloaded.
 
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Old 01-21-11, 03:58 PM
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So wouldn't having regular outlets actually be even safer by allowing only 15 amp appliances? I can replace the receptacles but I'm never going to use anything with a T shaped prong, so should they still be replaced?
 
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Old 01-21-11, 04:02 PM
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NO...if the circuit is designed for 20A...putting a 15 amp appliance on is no big deal.

I had a neighbor who was a master electrician and he told me once when he built his own house all the circuits would be 20A.
 
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Old 01-21-11, 06:26 PM
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Originally Posted by aabsc View Post
So wouldn't having regular outlets actually be even safer by allowing only 15 amp appliances? I can replace the receptacles but I'm never going to use anything with a T shaped prong, so should they still be replaced?
A plug with the T prong (as you call them) is a 20 amp plug. I don't even own anything at home with a 20 amp plug.
 
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Old 01-21-11, 06:50 PM
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Just in case anyone didn't notice the OP's Canadian. Maybe the bigger question is why this difference between US and Canadian code. Probably right up there with why did the chicken cross the road.
 
  #10  
Old 01-21-11, 07:26 PM
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Originally Posted by aabsc View Post
Why do you need T slot outlets for 20A split receptable outlets?
Thanks for replies.
Easy; to take a 20 amp plug, of course.
This is just the tip of the iceberg. There are quite a number of twist lock variations with current, voltage, number of poles, just in N. America.
 
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Old 01-21-11, 10:24 PM
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Originally Posted by CasualJoe View Post
I don't even own anything at home with a 20 amp plug.
I do. ........................
 
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