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guys any electrician,s here ??? (Read 2501 times)
billy
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guys any electrician,s here ???
Aug 14th, 2010, 11:56pm
 
guys need some help please need to replace an electronic ballast on a lighting unit ok the old ballast
has 8 terminals (wires) and the and the new one has 7 terminals so need to know what why this works  
 
pics of the old and new ballast (old one is the top )

 

 
cheers
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billy
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Re: guys any electrician,s here ???
Reply #1 - Aug 16th, 2010, 4:33am
 
undecided
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cromwell
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Re: guys any electrician,s here ???
Reply #2 - Aug 16th, 2010, 12:02pm
 
Looks like 1 to 4 is the same and one to seven, can't you put 8 with 7 ?
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Hamrag1
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Re: guys any electrician,s here ???
Reply #3 - Aug 16th, 2010, 3:39pm
 
Looking at the two ballasts, I would say that the only difference is that the old one feeds the two heaters on one side of both lamps, as separate parallel feeds, whereas the new one connects them in series.
If so I would try connecting  1 - 1, 2 - 2, 3 - 3, 4 - 4, 5 - 4, 6 - 5, 7 - 6, and 8 - 7
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