Lighting Transformer
September 17th, 2007
12 volt out door lighting I have 4 path lights 7 watts each and a 150 watt hadco transformer.?
Im having bulbs burnout every few weeks? im using 12 guage wire.voltage at each fixture is 11.9 to 12.2 volts the lights are within 60ft from the trans former. voltage at the house fixture is 118 volts. why are the bulbs burning out.?
this is a little confusing…but you don’t appear to have enough electrical draw (4 lights) to match the transformer and length of the wire.
as near as I can tell…based on the instructions that came with a set of low voltage lamps…the transformer, number of lights and length of wire are matched… I.E. 8 lights @ 7 watts each to a 50ft section of wire….the instructions also stated that you had to be careful NOT to let burned out bulbs remain for too long a time…to replace them as soon as you can….based on experience with these lights, what they say is true…I’ve had three and four bulbs burnt out at one time and the remaining bulbs seemed to burn out quite often.
I don’t claim to know at lot about this…but it seems that you don’t have enough of a load on the line (with 4 lamps) …and the load should match the transformer as near as possible…with four lamps @ 7 watts you should have a transformer around 30 watts.
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