I don't know what happened to my post yesterday, BUT the Neutral (Yellow Wire) should NEVER EVER go to ground except at the service equipment. If the ballast is attached to the metal chassis, then there is no need to ground it. It should be connected to ground going back to the service panel. You having the yellow wires grounded is more than likely your problem as these guys stated.
By grounding the yellow wire, you are feeding the transformers inside the ballasts power, but they are not getting a return current which is possibly frying them (transformer) cause the current is flowing to the path of least resistance (which would be the chassis or case). Also, there is a huge risk for electric shock by touching the metal of the refrigerator cabinet, as you are providing a new route for current to flow. As I assume you know, transformers use a iron core wrapped in wire to step down or step up voltage. The load is never physically attached to the line on the transformer, but uses a magnetic field to carry the power across it.
Being pulled in after multiple ballast replacements, this may well have been the problem.
The yellow lead ran to ground, so I tied it together.
If the equipment is installed incorrect, yes. This is why equipment must be grounded.
Also, there is a huge risk for electric shock by touching the metal of the refrigerator cabinet, as you are providing a new route for current to flow.
Don't assume. Ballasts are dangerous, because they usually use a autotransformer design with no isolation. This means that you can get shocked from just touching one lead.
As I assume you know, transformers use a iron core wrapped in wire to step down or step up voltage. The load is never physically attached to the line on the transformer, but uses a magnetic field to carry the power across it.
I FINALLY got an answer to this problem and wanted to here and let you all know.
The manufacturer installed the WRONG ballast at the factory.
Not the first time this particular manufacturer of EXCELLENCE, has screwed me with an OEM error, but it is the first time they've manned up and fixed it on their dime.
I hope this problem child will stay in bed for you now!
...and this admission of course, came long after the standard reply, "It's never happened before."
When we service hundreds of stores with thousands of their cases installed, they cannot get away with that load of bull squitter.
Originally Posted by icemeister
They had a guy running around with the correct ones in his truck, tucking problem children into bed.
Do you know what new ballast there putting in ?
Originally Posted by VTP99
As I mentioned in the first post.
I HATE lighting work.
If the lights are ON, I'm a happy guy. I have almost zero professional curiosity about it.
Originally Posted by jpsmith1cm
Sig removed by mod. G-Rated site