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landscape lights #193252
03/23/10 11:56 PM
03/23/10 11:56 PM
S
schenimann  Offline OP
Member
Joined: Feb 2008
Posts: 193
Western North Carolina
I picked up some work at a 2600 acre mountain developement here in western North Carolina. It's basically lots of small stuff that their maintenance can't or doesn't want to do(repair fixtures, troublshoot photoeyes and timers, etc.) They are having a problem with some landscape lights continually blowing bulbs. They are the Malibu brand with the 180watt/timer combo. There are 8 11 watt lamps on the circuit.

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Re: landscape lights [Re: schenimann] #193254
03/24/10 01:03 AM
03/24/10 01:03 AM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,166
Estero,Fl,usa
Are the bulbs really bad or just developing a bad contact with the socket. These Malibu things are pretty much junk if it is the same stuff they sell at Home Depot.
What is the actual voltage?


Greg Fretwell
Re: landscape lights [Re: gfretwell] #193263
03/24/10 08:31 AM
03/24/10 08:31 AM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,917
Brick, NJ USA
Longshot could be....incorrect bulbs. The wedge base bulbs could be the incorrect voltage.



John
Re: landscape lights [Re: gfretwell] #193265
03/24/10 09:07 AM
03/24/10 09:07 AM
F
forqnc  Offline
Member
Joined: Dec 2006
Posts: 19
Suffolk,Va, USA
Originally Posted by gfretwell
Are the bulbs really bad or just developing a bad contact with the socket. These Malibu things are pretty much junk if it is the same stuff they sell at Home Depot.
What is the actual voltage?


Have to agree here, I have these at my house. If it is not a bad connection with the bulb contacts, it can also be the wire clamp connection, which is usually buried under ground. The wire clamp is also plastic and a pain to crimp tightly.

Re: landscape lights [Re: forqnc] #193266
03/24/10 09:33 AM
03/24/10 09:33 AM
J
jdevlin  Offline
Member
Joined: Aug 2002
Posts: 402
welland ontario canada
How close are the bulbs to the timer. I beleieve they need to be a certain distance away or the voltage is too high. The output voltage is actually higher to compensate for voltage drop.

Re: landscape lights [Re: jdevlin] #193275
03/24/10 05:18 PM
03/24/10 05:18 PM
electure  Offline

Member
Joined: Dec 2000
Posts: 4,264
Fullerton, CA USA
"They" (Intermatic) also recommend that the transformer be loaded to at least 50% of its rating, or an overvoltage condition will result.

You might try a 121 watt xfrmr.
http://www.amazon.com/Intermatic-ML121RT-Malibu-Voltage-121-Watt/dp/B0002YTPL4

Intermatic also manufactures an 88 watt transformer if you think it's more suited to your needs
http://www.amazon.com/Malibu-ML88T-88-Watt-Ground-Shield/dp/B0000DG57B/ref=pd_cp_hi_2
.

Re: landscape lights [Re: electure] #193286
03/25/10 12:31 AM
03/25/10 12:31 AM
W
WESTUPLACE  Offline
Member
Joined: Mar 2004
Posts: 251
Kingwood, TX USA
Also, look at the bad bulbs. If they are black, then the bulb envelop cracked, mostly due to water, and let air in.If so check for water intrusion I agree most of these are made real cheap. Robert

Re: landscape lights [Re: WESTUPLACE] #193289
03/25/10 08:26 AM
03/25/10 08:26 AM
S
schenimann  Offline OP
Member
Joined: Feb 2008
Posts: 193
Western North Carolina
The bulbs are black. Some of the ones that still work have turned black. I agree that they are cheap. I am getting 12 v at the socket. I will talk to them about upgrading the fixtures.


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