changing a range circuit into a subpanel

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Stevenfyeager

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Location
United States, Indiana
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electrical contractor
In a kitchen remodel, the old free standing range (fed by 6-3 wgrd wire) is being replaced with an oven that requires 40 amps. (the new cooktop is gas) The service panel is not easy to reach and I need 3 new 15 amp circuits. Any thing wrong with using the 6-3 to install a new 60 amp subpanel and from panel that feed the new oven and my 3 new 15 amp 120 v circuits? Thank you
 
Stevenfyeager said:
In a kitchen remodel, the old free standing range (fed by 6-3 wgrd wire) is being replaced with an oven that requires 40 amps. (the new cooktop is gas) The service panel is not easy to reach and I need 3 new 15 amp circuits. Any thing wrong with using the 6-3 to install a new 60 amp subpanel and from panel that feed the new oven and my 3 new 15 amp 120 v circuits? Thank you
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Things that come to mind.

Finding a spot in a kitchen for a panel that meets 110.26 work space requirements

NM is limited to 60 C so that feeder may have to be a 50 amp.

Would the calculated load be under the capacity of of a 50 amp feeder? (Likely yes)
 
iwire said:
Things that come to mind.

Finding a spot in a kitchen for a panel that meets 110.26 work space requirements

NM is limited to 60 C so that feeder may have to be a 50 amp.

Would the calculated load be under the capacity of of a 50 amp feeder? (Likely yes)
Click to expand...
The basement is unfinished under the kitchen, a place for the new subpanel. The new wall oven is an oven and microwave combo, requiring 40 amps. Thank you
 
You'll have to do load calc and see if it meets NEC, but in reality this arrangement would never overload the 50A feeder.

Really though it's a judgement call what "not easy to reach" really means, vs. having a subpanel in a potentially weird location, vs. establishing a new path to main panel which may also be useful for future changes/additions whereas this new subpanel is somewhat limited (already full).
 
I'll definitely give you an "A" for out-of-the-box thinking! As a general home inspector, I would not view it as 'wrong', but I would suggest checking with the AHJ first.
 
Nothing at all wrong with that idea, other then possible load calculation being too high. The oven is a possible killer, but just because it needs a 40 amp circuit doesn't mean your load calculation will use full 40 amps for that appliance.
 
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