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Modification of Old Electrical Work

What is the safest method to connect a number 4 aluminum house wire to a copper wire oven pigtail?

Answer

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January 29, 2009 9:45PM

Use a #4 split bolt. Apply penetrox (an oxide inhibiting compound) to both wires and insert one wire on each side of the spacer bar. Tighten the split bolt with two wrenches. Apply two double laps of rubber amalgamating tape and then two laps of electrical vinyl tape. Position so that the splice does not touch the frame of the oven. Replace the junction box cover plate.