How to Wire a T8 Ballast.

Take care to not obscure the entrance hole for the 120-V supply wires with the ballast. For good results when welding with AWS E71T-8 flux cored wires, maintain a proper stick-out (3/4 inch) and use the proper gun angle (5 to 10 degrees toward the direction of travel).

Q: Should you use a specific type of power source for good voltage control?

It is also critical to keep the wire directed in the molten slag pool, otherwise wire will dive into the plate, stub and create a cold spot.

Fortunately, some inverters popular for construction work, like Miller's XMT® 350 VS, can compensate for voltage spikes and dips. Restore power to the circuit and check that the light is operating properly at the switch. When welding products of relatively small thickness, two-dimensional heat dissipation is present. A: Yes. Floyd Elliff of Local 263 (on right) tests the weld coupon of April Finkbonner from Local 86. Q: Other than technique, what else causes voltage problems? Although gas metal arc welding (GMAW) with a solid mild steel wire is popular, easy-to-use, and effective for many applications, it does have limitations and drawbacks. Take a 5/64-in.

Connect the red ballast wire to both of the red wires leading from the lamp sockets. I am not knocking ESAB Coreshield 8. Greg Metko, welding engineer with Miller Electric Mfg. Or if you don't have a Miller account, create one today. Make sure your weld cables are sized properly and that the cable, clamp and all connections are in good condition. Remove the lens, if present.

Read our privacy policy for more information. To activate your FREE subscription today, simply select which newsletter(s) you would like to receive and complete the form below. Q: What's the most common welding advice you give? Some T-8 wires simply won't run well if you don't use a drag technique. Q: Why are self-shielded T-8 wires so difficult?

While popular and/or necessary for structural welds, these wires are notoriously difficult to use.

Use the appropriate size driver bit and a cordless driver, or use the appropriate hand tool, to remove any screws holding the housing in place.

Co., discusses best practices for welding self-shielded flux cored wires. If you are replacing a T8 ballast, the wiring of the old ballast should be the same as that on the new ballast. Lighting Retrofit and Relighting: A Guide to Energy Efficient Lighting; James R. Benya, Donna J. Leban , Willard L. Warren.

For the last 12 years, he has participated in the Ironworkers Instructor Training Program. Often, the ballast housing is a piece of metal held in place with small tabs.