View Full Version : What gauge of electrical wiring to run outside?
dbcooper
September 5th, 2003, 03:15 PM
I'm planning on running electric to my garden pond and to the kids Club house. The garden pond will have 2 pumps and lighting and it's 35 feet from the house. The clubhouse is 110 feet from the house and i'm probably use it for lighting and tv. What gauge of electrical wiring should I use? I will be using conduit to bury the wiring and have a breaker box just for the outside wiring. One more question can I run electric wiring along with telephone and cable wiring in the same conduit.
Wgoodrich
September 5th, 2003, 05:27 PM
All the loads you mentioned would easily be carried by a 12 awg 20 amp branch circuit if these pump motors are the small fountain motors. If this is a large pond with half horse power pumps for irrigation then you need to tell us that. Right now you did not tell us amp draw of those pumps.
Remember all receptacles in both the club house and hte pumps must be GFI protected.
If you are installing Conduit remember EMT is not allowed buried in earth. PVC is fine but must be buried minimum of 18" deep.
12 THWN may be used. Just make sure it is 12 awg copper and there is a W in the initials saying it is approved for a wet location. All underground wiring is considered in a wet condition.
20 amp 120 volt 12 awg THWN.
Hope this helps
Wg
dbcooper
September 5th, 2003, 06:11 PM
The pump is 4/10 HP, 830 watts, 17.5/10 AMPS S/R (whatever that means). The second pump 290-520 watts, 2.57 - 4.45 Amps. will the Amps change the gauge of the wire? Should I run the telephone line, Cable, 12gauge in the same conduit PVC 40. Thank you for your quick reply!
Also, is there a place online to buy all this GFI, outside Waterproofing electrical materials?
Wgoodrich
September 6th, 2003, 06:03 AM
A single 12 awg 20 amp 120 volt GFI branch circuit will be fine for all you mentioned. You may use 1/2" PVC conduit and 12 THWN conductors black white and green. YOu may instead use one 12/2wGrd UF direct burial Cable. The PVC minimum burial depth is 18" but with UF cable minimum depth is 24" deep.
You may use a GFI breaker at the beginning of the branch circuit and the entire branch circuit then would be GFI protected.
You should keep a distance of at least 12" between the power cable and the TV cable and the PHone line. JUst dig the 24" deep trench. Put the power cable in bottom of trench then put 12" of dirt in trench then install your Phone cable then 6" more inches of dirt in thrench and your phone cable. Then fill the trench back to finished grade.
Good Luck
Wg
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