I've just installed an electric wall oven and am having some trouble with the wiring. I'd be really grateful if any of you have ideas.
After installing a new mini dual-pole 240v breaker and wiring in the oven, nothing happens at all--no lights go on, the panel stays dark, etc. Testing the connection at the back of the oven with a voltmeter, I read 120v across live-ground, 120v across the other live-ground, and zero volts across the two live wires (should be 240v). This suggests to me that the two live wires are in phase, rather than split-phase, and they're canceling each other to zero volts instead of adding to 240v.
The new dual-pole breaker is installed next to two other dual-pole breakers that supply my house's electric heat, which seems to be working fine, so I think the rails are functioning properly.
Any idea what's going on, and how I could fix the problem? I need the oven to make Thanksgiving dinner!