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Old 06-01-2019, 09:15 AM   #1
angus99
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City: Signal Mtn., TN
Country: US
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Join Date: Feb 2012
Posts: 2,153
Extending a cable

I’m installing an AC subpanel to create two separate feeds—one (15 amps) for a cooktop and the other (20 amps) for a convection/microwave oven. The cable that feeds the subpanel from the main panel is 8 mm three-wire. It’s in excellent condition, but very stiff, which makes it difficult to wire the panel inside the polycarbonate box I’m using to house the subpanel. I’d like to extend it a couple of feet with more flexible number 8 boat cable—which will be much easier to make connections inside the box.

What’s the preferred way of doing this: install a terminal block to make the transition or use heat-shrink butt connectors? (I don’t want to replace the 8 mm cable unless both of the above are patently unsafe.)
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