billcert
New User
- Location
- Philadelphia
- Occupation
- General Contractor
Hello everyone,
I have 10 lay-in four tube fluorescent fixtures in my shop, with a total of 20 two bulb ballasts. Three of the bulb pairs were flickering, so did the standard resistance test:
Neutral white wire to each hot out, red, blue and yellow. All three were showing around 10 ohms on the blue wires, red and yellow were fine. Not liking coincidence, I checked all 20 fixtures, and all are showing 10 to 12 ohms on the blue wires even though all of the other fixturs are working just fine. What am I missing? Thanks in advance for any thoughts.
I have 10 lay-in four tube fluorescent fixtures in my shop, with a total of 20 two bulb ballasts. Three of the bulb pairs were flickering, so did the standard resistance test:
Neutral white wire to each hot out, red, blue and yellow. All three were showing around 10 ohms on the blue wires, red and yellow were fine. Not liking coincidence, I checked all 20 fixtures, and all are showing 10 to 12 ohms on the blue wires even though all of the other fixturs are working just fine. What am I missing? Thanks in advance for any thoughts.
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