<div dir="ltr">T12 ballasts are incompatible with T8 bulbs. Interchange them and you will have problems in short order.<div><br></div><div>If your T8 bulbs are still good you may be able to wire in new ballasts, but please give that job to an electrician! T8 ballasts aren't wired the same way as T12s would be!</div><div><br></div><div>-Peter</div></div><br><div class="gmail_quote"><div dir="ltr">On Mon, Aug 20, 2018 at 6:14 PM john niolon <<a href="mailto:jniolon@att.net">jniolon@att.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri';COLOR:#000000">
<div>I’ve changed all my 4’ t-8 fluorescent bulbs with LED tubes (with
ballasts). Much better light output and I’m very pleased. I still
have a couple of 4’ t-12s fixtures and I’m</div>
<div>wondering if I can just swap out the tubes... I think the end
connectors are the same for t-8 and t-12... will the t-12 ballast cause a
problem ???</div>
<div> </div>
<div>thanks</div>
<div>John</div>
<div> </div></div></div></div>
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