Sue had this antique 3 arm floor lamp that took a mogul base 300 watt three way lamp for the uplight. The plan is to modify it to use a 100 watt Metal Halide lamp.
Took a measurement of the height of the light center to make a match with the new lamp. Added a switch to turn the ballast off and on.
Comparison of the incandescent and HID lamps. This HID lamp has a 4000K color temperature and a 92 CRI and is rated for an open fixture. Lumens on the new lamp are 6150 which is just a little more than the incandescent at 1/3 the wattage. Life of the halide is 15,000 hours vs 1000 for the original.
To mount the ballast, cap and starter I made a plate to fit under the base. Drilled and tapped the legs to put studs in to space and hold the plate on. Base is brass plated cast iron.
Everything mounted on the plate
Needed three more wires up the column for a total of five to get everything to work.
It works! Microsun makes halide lamp assemblies new
http://www.microsun.com/
It takes a few minutes to really get going...The tube inside the bulb is I think what gives it an open fixture rating.
No comments:
Post a Comment