The side-by-side "110-" and "220-volt" outlets were identical on construction sites in some places during the sixties/early seventies. They were both wired with a common 3-wire 125/250-volt Twist-Lock receptacle, so if you saw an extension cord to plug into with your trusty wye adapter, you had to ask someone or follow the cord(s) back to the temporary power pole. At least they were usually plainly marked back there. {One guy’s Skilsaw worked with phenomenal torque until it burst into flames.} The ensuing ‘cutover’ enforcement [change to unique cords and receptacles] kept state DIS {pre-OSHA} inspectors busy for about a year.
[This message has been edited by Bjarney (edited 05-11-2002).]
