I also have a 300W transformer but was misinformed at store that Terminal Block C was used for a second strand of lites. In a perfect world, the two strands would be even but as reality would have it the 20/80 rule applies. The lites on short side are bright and the ones on long side are dull... any advice???? It is a 200 ft run total with 12 gauge and using pretty close to max wattage on bulbs... bigger transformer maybe??? Thanks, VR

  Add to Favorites

The problem you have is not the transformer, it is the way your have wired the system.  You will need to split the load into several home runs from the lights back to the transformer or buy a MULTI-TAP TRANSFORMER to bump up the voltage. 

Check out our HOW TO DESIGN A LOW VOLTAGE LIGHTING SYSTEM information page for more specific ideas.  You are experiencing a classic case of voltage drop.  My rule of thumb, is not more than 100 watts on 100 feet of cable.

  Add to Favorites