Using existing #6 Al home run for new 20A single oven...

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billygoat58

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Medina Ohio USA
Doing a light remodel (existing kitchen / Eaton service panel). My EC wants to use existing #6 Al SER (serviced the existing double wall oven) for the new single oven which has a 20A rating at 240v / with a 3.6KW rating. In theory I'm (almost certain) this should not be a problem (use existing run and changeout breaker to a properly sized 20A-two pole at panel) and it saves the EC a PITA new run (~75' from cabinet to panel). My problem is with the #6 Al and specifically...aluminum wire usage. Probably unfounded on my part, but something I've carried with me over the years. Are my fears unfounded for this particular application? I like to err on the side of caution -- because I've this thing about never testing my business insurance...and I dislike fires. Appreciate responses and thank you.
 
There is nothing to worry about, the #6 AL will be fine. It was common in the past to use #6 and larger AL with no problems. Of course the terminations and splices must be handled correctly
 
Nothing wrong with repressing the aluminum cable. The EGC size might be an issue.
 
Thank you Roger. I think my fear of Al comes from something I'd either read or heard (horror stories) regarding its use. Probably similar to K&T in some people's minds...! Must admit I was surprised to see the builder had used this in the original run AND that it was on a 50A breaker. Didn't bother to check plate on old oven but I'd have thought #6Al/50A was undersized for run and should've been sized 1 # up.
 
I think I would just check the oven data info to see if it says anything. I typically go aluminum everywhere except elevators and hvac equipment because there have been a few hvac units that I found direction for copper wire only in the data sheets. Could of been a one off but when the contractor has multiple equals to choose from it keeps me safe
 
I haven't done it yet but have heard that guys are using aluminum for EC chargers and splicing to copper in a junction box then connect to the charger.
 
Amps said:
I haven't done it yet but have heard that guys are using aluminum for EC chargers and splicing to copper in a junction box then connect to the charger.
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Do some ev manufactures have the copper only requirement for equipment terminations ?
 
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