COMMUNITY FORUM

RalphB

09:37AM | 06/20/07
Member Since: 06/19/07
2 lifetime posts
Bvelectrical
I have installed 46 landscape lights 10w and 15 up lites 20w using 12/2 landscape wire.

I have two transformers one is 900w with multi taps the other 300W with taps.

My problem is the wire on one of the circuits keeps getting hot and starting the mulch on fire. It was fine for 4 months and has started the problem just recently. The transformers do not trip the breakers , they have electrical plus thermal breakers. Can anyone help me with this problem..

Billhart

02:58PM | 06/20/07
Member Since: 04/25/05
1918 lifetime posts
You did not indicate how the circuits are broken up. But 900 watts is 75 amps at 12 volts.

Much too high for #12 wiring.

RalphB

08:32AM | 06/21/07
Member Since: 06/19/07
2 lifetime posts
Thank you Bill Hart for your answer. I sould have been move explicit with my 900w transformer..actually it is 3 300w transformers and I have three different runs that have about 180w of lights on each run. They work fine. The one that I am having problems with is the 300W that keeps getting hot in various spots. I was thinking it might be too many lights on the 300w and thats what is causing it. I have 180W of lights on that run but it is about 100Ft run so maybe its too long for the transformer. Your thought are welcome

Billhart

09:19AM | 06/21/07
Member Since: 04/25/05
1918 lifetime posts
That is along run and you might have problems with voltage drop that makes the light be dimmer than normal.

You might do a google on Voltage Drop Calcualtor. Most of them are based on 120 or 240. And you can use them and just look at the voltage drop number. But some also include 12 volts.

You might want to split it into 2 circuit and run 2 #12 with 1/2 the lights on each. Only join them at the trasnformer.

Or run #10 to the middle of the run of lights and then join it to #12 for the light runs.

All of that said the #12 should still work fine. 180 watts of lights is only 15 amps. If you have access to a clamp on amp meter you might want to check the current in case there are the wrong bulbs in the fixtures.

Is the problem at the connection to the lights? If so are you using the quick connects with spikes that just clamp into the cable?

I don't like those and that might be your problem. They can allow moisture ito the cable and possible cut strans in the cable.

While not cheap I like the wire nuts that come filled with a grease to keep out moisture.
Click_to_reply_button
Inspiration_banner

INSPIRATION GALLERY



Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply_choose_button

captcha
type the code from the image

Anonymous

Post_new_button or Login_button
Register

Few projects are more fun than upcycling a vintage piece in a surprising way. Outfitted with a sink and a delicately tiled... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... For windows, doors, and mirrors that could use a little definition, the Naples Etched Glass Border adds a decorative flora... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Follow_banner_a
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon
 
webapp2