ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Where is Everyone?
by gfretwell - 04/09/21 01:08 AM
HI gang, long time since I was here...
by gfretwell - 04/09/21 01:02 AM
Lock-down Thread
by gfretwell - 04/06/21 09:30 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 7 guests, and 17 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Aluminum Wire For Landscape Lighting #73090 12/16/06 04:45 PM
Joined: Aug 2004
Posts: 55
W
wendel Offline OP
Member
Does anyone know if aluminum wire is appropriate for outdoor landscape low voltage lighting? Copper is getting a bit expensive so I thought in an outdoor, low voltage situation, aluminum might be a better way to go.

Work Gear for Electricians and the Trades
Re: Aluminum Wire For Landscape Lighting #73091 12/16/06 04:53 PM
Joined: Apr 2005
Posts: 197
L
LearJet9 Offline
Member
AL wire is totally and absolutely useless for anything.

Re: Aluminum Wire For Landscape Lighting #73092 12/16/06 10:30 PM
Joined: Jun 2003
Posts: 681
P
PCBelarge Offline
Member
LearJet

That is just your opinion.

I certainly would not use Al wiring outdoors/underground.

For other applications, Al could be a cost effective way to install feeders. There are many ways to accomplish this, raceways, MC, etc...


Pierre Belarge
Re: Aluminum Wire For Landscape Lighting #73093 12/17/06 03:50 AM
Joined: Oct 2004
Posts: 132
M
mhulbert Offline
Member
If all of your runs were in PVC, and all your connections in above grade "power posts", with DB rated connectors, aluminum would be great.

For the typical LV, direct burial setup, I'd have a hard time trusitng it. Too bad, since LV lighting uses some heavy cable, the copper adds up.

Re: Aluminum Wire For Landscape Lighting #73094 12/17/06 08:51 AM
Joined: Jan 2003
Posts: 4,391
I
iwire Offline
Moderator
I agree with PCBelarge and mhulbert. [Linked Image]


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Aluminum Wire For Landscape Lighting #73095 12/17/06 11:32 AM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
Unless the manufacturer of the power unit for the system specifically allows a differant cable type or conductor type in their installation instructions, aluminum would not be permitted IMO.

In UL's White Book, under the heading of Landscape Lighting Systems, Low Voltage (IFDH), the conductors should be listed SPT-3 or SPT-2-W.

Under the heading of Flexible Cord (zjcz) in the first paragraph " All conductors are stranded copper."


Few things are harder to put up with than the annoyance of a good example.
Re: Aluminum Wire For Landscape Lighting #73096 12/17/06 01:22 PM
Joined: Jan 2005
Posts: 5,316
renosteinke Offline
Cat Servant
Member
Learjet has expressed the feeling of "the trade" ... if not that of the wire manufacturers!

Aluminum, anywhere near the ground, can't help but have corrosion issues. Nor have I ever seen a landscape lighting transformer listed for use with aluminum wire. As far as I know, aluminum is not currently made in wire finer than #6. (I could be wrong on that).

Indeed, the only place I see aluminum used is in the PoCo service drops.

But, before I get my shorts in a know over "can I or can't I," I'd look to see if the stuff exists first of all.

Re: Aluminum Wire For Landscape Lighting #73097 12/17/06 02:01 PM
Joined: Jan 2003
Posts: 4,391
I
iwire Offline
Moderator
Quote
Learjet has expressed the feeling of "the trade"

No he has not spoken for "the trade".

Aluminum can be and is used without problem for many circuits.

Would I use it for direct burial?

Would I recommend it for a seaside installation?

No.

Inside a building for feeders yes it is a fine product.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Aluminum Wire For Landscape Lighting #73098 12/17/06 02:52 PM
Joined: Jan 2005
Posts: 315
L
luckyshadow Offline
Member
Around here aluminum cable is used on 99.9% of residential services. The standard here is 4/0 Al. SEU service cable.
I have even seen some commercial feeders being run in aluminum .

Re: Aluminum Wire For Landscape Lighting #73099 12/18/06 08:12 AM
Joined: Dec 2001
Posts: 2,492
T
Texas_Ranger Offline
Member
Most European power companies have been known to run Al underground feeders everywhere, so it must be possible. One thing though: they always use crimp splices and embed them in some kind of resin, so there is absolutely NO chance of moisture or air getting to the connections.

Page 1 of 2 1 2

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Vlado
Vlado
Croatia
Posts: 28
Joined: February 2011
Show All Member Profiles 
Top Posters(30 Days)
BigB 1
Popular Topics(Views)
277,658 Are you busy
211,275 Re: Forum
198,311 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3