[kiferl]

Hello,
I am planning on running UFB wire 12/2 through PVC conduit from my house to my garage and am wondering if this is a good idea or is this something that is not normally done?
Thanks.

 

[Nealtw]

Are you sure that is all you need, You only get to run one cable to a detached garage.

I don' know about best cable type.

 

[MTN REMODEL LLC]

1)It's gonna be a biotch unless it's a dead straight run.

I have to go check my depths of burial (getting older sucks), but in conduit just run thwn (Thhn-2) or UF buried deeper.

 

[kiferl]

I am also thinking that I can run two separate UFB 12/2 wires in the same conduit. The conduit size will be 1". Is this ok according to code?
One for lights and one for outlets.

 

[RAL238]

I am also thinking that I can run two separate UFB 12/2 wires in the same conduit. The conduit size will be 1". Is this ok according to code?
One for lights and one for outlets.

You can only have one circuit to a detached structure. So, no, it's not ok. If you want more than one circuit, you need to install a subpanel in the garage.

 

[kiferl]

One more question.
If I run #10 UFB to my garage, will it handle 5 or 6 GFCI outlets and 5 light fixtures?
THankshfor all the help.

 

[Jim Port]

Whether the 10-3 is sufficient depends on the loads you plug in and use at the same time. The receptacle cannot be on 30 amp circuits. You are limited to 20 amps.

You can run one multi wire branch circuit to the shed without needing a panel.

 

[rjniles]

What is the distance from house to garage?

 

[MTN REMODEL LLC]

What is the distance from house to garage?

RJ is asking if you've considered or are aware of voltage drop.

Unless you are really loading up at the same time those recepticles (multiple heaters / tools etc,) One #12 20A MWBC should be plenty.

Tell us what you plan to run out there....you probably won't have to do a formal load calc.

 

[chetwisner]

Are you planning on only lights and general purpose receptacles in the garage?

 

[seharper]

I am also thinking that I can run two separate UFB 12/2 cables in the same conduit. The conduit size will be 1". Is this ok according to code?

I don't recommend cable in conduit. It requires huge conduit.

Let's crunch the numbers. When you put cables in a conduit, you must look at the widest dimension of the cable. For 12/2UF that is 0.463 inches.

With 2 identical-width cables in a conduit, minimum conduit ID is 254% of that width (and that is a shortcut; I've precomputed a bunch of stuff). So 0.463x2.54 = 1.176" diameter (ID). That pushes you into 1-1/4" conduit.

Preferred method: trench a 1/2" conduit, and effortlessly fish a black, red, white, gray and green THWN-2 individual wire into it. Red/gray are circuit 2's hot/neutral. Green is the shared ground. It's OK to use another black/white pair, but they must be bundled or marked somehow to tell them apart.

One for lights and one for outlets.

ONLY IF the lights are switched from the house. You're up against NEC 225.30, the Highlander Rule. There can be only one circuit feeding an outbuilding.

- Unless the 2 circuits are of different voltages. So a 120V, a 240V-only, and a 120/240V MWBC (giving two 120V sub-circuits) are all counted as different voltages.
- Or the circuits have different characteristics. Circuit 1 is tools. Circuit 2 is lights and it's switched from the house. Circuit 3 is well pump, and it's switched on/off by the pressure switch in the house. Different characteristics.

 

[kiferl]

All I am running out in the garage will be 4 lights and hand tools once in a while.
No welder, heater, air compressor or anything like that.


60 feet from the house panel to the garage.

 

[MTN REMODEL LLC]

All I am running out in the garage will be 4 lights and hand tools once in a while.
No welder, heater, air compressor or anything like that.


60 feet from the house panel to the garage.

Honest you are fine to go with a 15A 14G circuit,....

... but as long as you are running out there, at very nominal cost, I would run a MWBC *multi wire branch circuit" whichj may sound complicated but it isn;t and anyone will explain to you) with stranded 3 wire +ground THWN (now known as THHN-2) in plastic conduit.

At 60 feet, for extra $25 dollars (less than UF) you'll minimize any voltage loss (especially with MWBC) and have more than ample amperage if your use should change in the future.

 

[kiferl]

Thank you for all the help and advice.