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"same branch".. just a reminder to anyone do NOT use both branches of 240

The main danger of desiring to use two or more outlets is the possibility of having BOTH branches of the 240 connected through the IC.
No problem until a fault. Then you could get 240 volt differential possible through the IC connecting the two separate 120v branch.
(combined they make the 240 volt differential)

Like I wrote, this is not usually ever an issue. but it can accidentally create a potential lethal voltage.
You can check to see if both AC duplex are from the same 'side' of the 240v. buy using a voltage checker from both 'hot' sides of the two duplex. If you get O voltage. then they are the same. If you get 240v, then they are from the two different sides.
If you have no idea which is the hot.. Then the readings would be (trying all four wires with each other through a voltmeter for AC level) same: 0v(both hot) 120v 120v (hots to other neutral) 0v(both neutral). or if not same: 240v(both hot), 120v 120v(hots to other neutral) 0v(both neutral)



Edits: 01/16/17

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