Posted by John T on June 17, 2015 at 13:26:50 from (216.249.74.3):
In Reply to: Elect wire size posted by 37Chief on June 17, 2015 at 11:02:44:
Good afternoon Chief, you ask "What size wire should I use?"
Lets do the math. A 5 HP 240 VAC Single Phase motor will draw in the vicinity of around 28 FLA which 8 Gauge Copper wire will handle HOWEVER that doesn't account for Voltage Drop. Therefore, I would use AT THE MINIMUM 6 Gauge THWN Copper. Bigger wire would yield less voltage drop and/or to allow for future expansion.
To feed say a 60 Amp 120/240 Volt Single Phase Three Wire SUB PANEL equipped with two pole Main Breaker in that remote outbuilding, you need to run FOUR Conductors out. Two Ungrounded Hots (L1 & L2),,,,,,,,,,One GrounDED Conductor Neutral,,,,,,,,,,,,,One Equipment GroundING Conductor. You will need to install and bond a Grounding Electrode (earth driven copper rod or rods or other suitable electrodes, check local authority or NEC) at the outbuildings electrical service. While the exact rating of the home panels circuit breaker which feeds the outbuilding depends on the wire size and type and enclosure, a 60 amp will likely suffice. DONT FORGET IN THE REMOTE PANEL THE NEUTRAL AND GROUND BUSSES (unlike in your homes main panel) ARE TO BE KEPT SEPARATE AND ISOLATED. The tubs case/frame is bonded to the Equipment Ground Buss but NOT the Neutral.
You could enclose the individual THWN conductors in buried PVC Conduit (so long as NOT under driveway and if so concrete encased or Rigid),,,,,,,,,,,,,,,,,If they make it???? you could direct bury 4 Conductor UF Underground Feeder Cable,,,,,,,,, You might get by direct burying Underground Service Entrance (USE) Cable if its manufactured with 4 Conductors (its typically 3 like to my home from the transformer). NOTE if you were to enclose an Equipment GroundING Conductor in metallic conduit, it needs to be insulated NOT bare as I recall. Heck you could use aerial cable if you like. I LIKE THE IDEA OF BURYING PVC CONDUIT and the use of individual THWN Conductors myself.
John T Longgggggggg retired Electrical Engineer and rusty on the latest codes SO NO WARRANTY but believe this is most likely correct, check with local authority or Utility providers and the NEC if adopted and it applies, versus anything posted here (where's Billy Bob and Bubba lol) is my best free advice.
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
