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Electrical Confusion

 
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Old 10-23-2018, 09:56 PM   #1
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Electrical Confusion


Iím not much for the electrical work. I tend to lean toward installing outlets and switches as well as a few other basic services. However, Iíd like to install driveway lights at my property on my own. Ideally Iíd like to tap into my shops panel and run it to the light at the top of the driveway (about 400í away). My current plan is to run some 12 gauge underground wire through conduit to the first post. Planning to have 3-4 lights on the driveway. Havenít decided if Iíll go with LED or not. Also unsure of the wiring to run between lights. A buddy of mine gave me some from his place and it seems to work but want to make sure I have the right stuff. Is this the right gauge wire for this project?


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Old 10-23-2018, 10:09 PM   #2
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Re: Electrical Confusion


Have you considered solar-powered ground sconces, etc, or are you looking for more serious lighting? They probably make solar-powered lamp posts, too.

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Old 10-23-2018, 10:10 PM   #3
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Re: Electrical Confusion


Confusion and Electricity don't play well together
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Old 10-23-2018, 11:40 PM   #4
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Re: Electrical Confusion


I'd probably put your friends free wire on a nail and instead run THWN in conduit to a middle hidden post. From there I'd install a 24 volt transformer controlled by a photocell and run my low voltage wires in opposite directions to my lights.

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Old 10-24-2018, 07:24 AM   #5
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Re: Electrical Confusion


Low wattage line voltage lights will give you minimal voltage drop over such a great distance. I don't see an issue with what you're proposing. Underground wire with the added protection of conduit.

But I'm not a sparky.
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Old 10-24-2018, 07:31 AM   #6
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Re: Electrical Confusion


Don't think you are suppose to run UF in a conduit either.
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Old 10-24-2018, 08:03 AM   #7
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Re: Electrical Confusion


So sounds like I should be okay just running 12 gauge wire 400í feet underground to the first post and then my lights will be powered from there. Hereís a picture of my proposed plan




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Old 10-24-2018, 08:43 AM   #8
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Re: Electrical Confusion


What about voltage drop for that length?
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Old 10-24-2018, 12:09 PM   #9
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Re: Electrical Confusion


Quote:
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Don't think you are suppose to run UF in a conduit either.
Perfectly legal.
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Old 10-24-2018, 04:36 PM   #10
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Re: Electrical Confusion


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Have you considered solar-powered ground sconces, etc, or are you looking for more serious lighting? They probably make solar-powered lamp posts, too.


The lights are positioned on trees or posts next to trees so they wonít get much light.


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Old 10-24-2018, 09:50 PM   #11
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Re: Electrical Confusion


Quote:
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What about voltage drop for that length?
If the lights are LED low power it'll be minimal.
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Old 10-24-2018, 10:41 PM   #12
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Re: Electrical Confusion


Quote:
Originally Posted by MarkJames View Post
What about voltage drop for that length?
Quote:
Originally Posted by jtomm View Post
So sounds like I should be okay just running 12 gauge wire 400í feet underground to the first post and then my lights will be powered from there. Hereís a picture of my proposed plan




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Quote:
Originally Posted by jtomm View Post
The lights are positioned on trees or posts next to trees so they wonít get much light.


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Do a ring system.

Tom
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Old 10-24-2018, 11:07 PM   #13
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Re: Electrical Confusion


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Do a ring system.



Tom


Can you explain this?


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Old 10-25-2018, 12:01 AM   #14
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Re: Electrical Confusion


Quote:
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Can you explain this?


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Feed from both ends.

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Old 10-28-2018, 04:26 PM   #15
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Re: Electrical Confusion


Use A 240VAC input transformer, that will cut V drop issues to 1/4th of 120VAC input tranny
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Old 10-28-2018, 05:20 PM   #16
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Re: Electrical Confusion


Seriously. You guys are probably overthinking this with ring system and 240V transformers. If you have a few 11 or 15 watt LEDs, you essentially won't have any voltage drop (as far as the lights are concerned) with 12 gauge wire. Even at 1000 feet.
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Old 10-28-2018, 06:37 PM   #17
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Re: Electrical Confusion


Quote:
Originally Posted by jtomm View Post
Can you explain this?


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Quote:
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Feed from both ends.

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What he said.

Same power supply, cable enters both ends of the load path.

Just don't cross the +/-.

Unless you're using AC rated LED's you need a power supply, not a transformer.

Tom

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Old 10-29-2018, 04:11 PM   #18
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Re: Electrical Confusion


The beauty of a 240 VAC input power supply lowers the operator cost every hour of night for the life of the system, You could switch to a 14 gauge wire or 10 gauge and have a GFIC outlet for seasonal decorations and wattage for future security devices/ gates......

The "ring" circuit fascinates me... I'd consider using it on work bench outlets and kitchen counter outlets to improve performance.

A ring circuit on one's plumbing might actually yield more noticeable improvements in steady supply rates and temps....
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Old 10-29-2018, 05:53 PM   #19
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Re: Electrical Confusion


Rings work well in low voltage landscape systems (12 or 24 volt). There’s not much push in the systems so entering both ends really helps.

Ring line voltage systems are very common in the UK.

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Old 10-29-2018, 05:55 PM   #20
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Re: Electrical Confusion


Quote:
Originally Posted by MarkJames View Post
What about voltage drop for that length?
A lot, if itís a 12 volt system heíll be down to about 9 volts.

Tom

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