![]() ![]() Some people get hung up on the 50Amp rating of the Range receptical itself.All the ones I find here in Alberta are rated for 50 amps. ![]() If you require a 50 amp service to an appliance you MUST USE 6/3 and a 50 amp breaker. Largest breaker size you can use for 8/3 is 40 amps. The reality is that the wire size you choose dictates the maximum breaker size size you MUST use. I am a master electrician in Alberta Canada. Instead of perpetuating incorrect information, you could have asked WHY you were wrong.ĭo you want the answer or do you want to go figure it out yourself? HINT: read the temp ratings on circuit breakers.Īnd also where are you getting your (mis)information about derating? Because you're totally wrong about that too. Thanks for the info, and referencing the rules good to know I'm good with my current wiring (they sure don't give away 6/3). If I am wrong in any way feel free to educate me so that I may correct my ways. Note: The changes for the ampacities of the wire sizes I speced were changed in the 2012 edition of the Canadian Electrical Code and remain current today. That is probably why a 50A breaker is speced by Miele for a 40A range. With a 40Amp breaker you are at 100% load which is violating code. Therefore for your 40amp Miele Range a 50Amp breaker is required. Again #8 wire would need to be used for a 40amp breaker.Īs for Jrees, you are only allowed to load a breaker to 80% of it's capacity. #10 NMD90 is technically good for 40A but rule 14-104(2) limits the breaker size used on #10wire to 30A. ![]() So technically you could use a 40Amp breaker. If you want to be specific rule 26-744(4) states that for a 50A or less range a 14-50R receptacle must be used.Ģ6-744(5) states that the receptacle can be connected to a 40A minimum branch circuit. ![]() Where is there incorrect information? Table 2 and Code 4-004 of the CEC. I did consult the CEC and with the recent changes, #8 90'C rated cable is good for 55amps (assuming no derating factor). Nice going dude.īTW, the rest of this thread is also a bit of a tragedy, seemingly nobody wants to actually consult the CEC and find the real answer, rather than speculating and looking at irrelevant sources. Nice of you to knock up a 5 year old thread. The branch circuit and wiring and breaker must be 50A. The cord set and plug on the range itself is often only rated for 40A but that is fine. Read any manual for a range and you will find the draw of the range is 40A, therefore 40A is 80% of the 50Amp breaker and #8 wire which meets code. You can only put an 80% load on such a 50A breaker, so 0.9*50A=40A. So regardless of which receptacle you use (50A being the most common for a range), for a 50A breaker you need to size the wire accordingly to be of equal or greater capacity than the breaker. Therefore that is 3 conductors and no derating factor is involved therefore you are good for 55Amps. You have 3 conductors (red/black/white) with the bond not being counted according to rule 4-004. For residential use you would normally be using NMD-90 cable so it's good for 55Amps. #8 90'C rated cables are good for 55 amps. In Canada the latest Canadian Electrical Code states as follows in Table 2. A little late but this may help future people who drop onto this conversation looking for information. ![]()
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