Return to the Electrical Wiring Forum | Post a Follow-Up

 o
Landscape Lighting problems

Posted by dwojo (My Page) on
Sun, Jun 16, 13 at 14:14

This is a follow up to a post that had died. I've got a 12v landscape lighting system with a 300 VA transformer and 14 lights. The light bulbs are generally 20 watt halogen but I also have two of the bigger bulbs on gate posts (same size that you would use for a desk lamp). Those bulbs are also 12v but are 50W bulbs. Problem I have is one section of spliced wires (connected by screw caps) really heats up and on occasion the lights in the strand, especially the 50 watt post lights, dim. Can the problem easily be corrected by replacing the bulbs with smaller more efficient wattage bulbs - especially the two post lights? Suggestions? Thx


Follow-Up Postings:

 o
RE: Landscape Lighting problems

The heat is being caused by high resistance. That can be the result of a poor splice or, often found in outdoor copper LV wiring, oxidation of the copper in the wire. The wire at the splice should be bright and shiny and not dull and black.


 o
RE: Landscape Lighting problems

If my math is correct you have 340w on a 300w transformer.

14 lamps in total with 12 at 20w and 2 at 50w?

Are these lights divided into separate circuits from the transformer or are they all on the same circuit?

That comes to over 28 amps at 12v. What size wire are you using?


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Electrical Wiring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here