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    mradosevich's Avatar
    mradosevich Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jul 8, 2012, 09:09 PM
    Converting 120/208 to 240
    What boost transformer would I need to boost from 120/208 three phase ,to get an AC unit to work that uses 240v at 26 amps
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #2

    Jul 9, 2012, 04:36 AM
    Is the A/C single-phase or three-phase?
    bigsprings2009's Avatar
    bigsprings2009 Posts: 1, Reputation: 1
    New Member
    		  
    #3

    Jul 12, 2012, 08:10 PM
    Just hook your secondaries up 240 instead of 208y a on left b and c in middle and d on right and that will take it from 120/208y to 120/240 just make sure you have the right kva for what your running
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #4

    Jul 13, 2012, 08:42 AM
    I have not seen a 3 phase 120/208 volt output transformer with enough taps to get 240 volt output.

    Can you privide a make and model number of such a unit?
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