Use-2 Wire Inside Exposed - Electrical - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools
Display Modes
Old 09-23-2010, 07:42 PM   #1
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Default

use-2 wire inside exposed


I've searched for hours and get confusing information.

Can I run cable thats marked USE-2 RHH RHW-2 XLPE inside along the joists "not in conduit" to my main panel to a sub panel in another building.

Is this open air?

Cable is #4 copper

Brian
blorentzen is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 09-23-2010, 08:29 PM   #2
" Euro " electrician
 
frenchelectrican's Avatar
 
Join Date: Apr 2006
Location: WI & France { in France for now }
Posts: 5,369
Rewards Points: 2,000
Default


Quote:
Originally Posted by blorentzen View Post
I've searched for hours and get confusing information.

Can I run cable thats marked USE-2 RHH RHW-2 XLPE inside along the joists "not in conduit" to my main panel to a sub panel in another building.

Is this open air?

Cable is #4 copper

Brian
Let me post the photo so you can point which one it is refering

First one is SEU



Or

SER



And the other thing any subpanel runs it must use 4 conductor cable you can not use 3 conductor cable anymore per NEC code.

The other thing the 25mm{#4 AWG } Copper verison you are only limited to 70 amp breaker size max if you go with alum it will drop down to 60 amp max.

is other building is attached or detached if detached you must sink two ground rods as well.

Merci.
Marc
frenchelectrican is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 09-23-2010, 08:49 PM   #3
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 4,413
Rewards Points: 5,082
Default


http://www.iaei.org/magazine/?p=961

No you cannot.
brric is offline   Reply With Quote
The Following User Says Thank You to brric For This Useful Post:
frenchelectrican (09-23-2010)
Sponsored Links
Advertisement
 
Old 09-23-2010, 10:46 PM   #4
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Default


The bold statement near the bottom in this spec throws me.

"and may be installed in air"

What does that mean?


Specification

USE-2 or RHW-2 or RHH

XLPE Insulation, 600 Volts



1. SCOPE


1.1 This specification describes single conductor XLPE, Type USE-2 or RHW-2 or RHH, crosslinked polyethylene insulated cables for use in circuits not exceeding 600 volts. Cables are listed by UL as Type USE-2 and are recognized for underground use in wet locations at a maximum continuous conductor temperature of 90C in accordance with Article 338 of the National Electrical Code. The cables are also listed by UL as Type RHH or RHW-2 for general purpose wiring applications at maximum continuous conductor temperature of 90C in dry locations (RHH) or 90C in wet or dry locations (RHW-2) and may be installed in air, conduit or other recognized raceways in accordance with Article 310 of the National Electrical Code.

This spec also confuses me:

The cables are also listed by UL as Type RHH or RHW-2 for general purpose wiring applications at maximum continuous conductor temperature of 90C in dry locations (RHH)

http://www.usawire-cable.com/pdfs/USE-2_XLP.pdf


Below it states residential, and dry locations, more confusion.

RHH, RHW-2 and USE-2
UL Types RHH, RHW-2 and USE-2 building wires are also used in residential and commercial buildings, industrial plants, utility substations and generating plants for general-purpose, control, power and switchboard wiring. In most cases, these three types
are combined into one cable (one part number) having all three ratings. In this case, the wire is known as an RHH/RHW-2/USE-2 listed wire or cable. This “triple listed” wire can be installed in conduit or other raceways in either 90C wet or 90C dry locations. Sizes 1/0 AWG and larger are suitable for use in cable trays when identified with the optional UL marking “For CT Use”. Because of the USE-2 listing, it can also be directly buried.
http://www.anixter.com/AXECOM/AXEDoc...g_Wire_B-3.pdf

Last edited by blorentzen; 09-23-2010 at 11:14 PM.
blorentzen is offline   Reply With Quote
Old 09-24-2010, 05:26 AM   #5
Master Electrician
 
Join Date: Mar 2010
Location: Indiana
Posts: 4,413
Rewards Points: 5,082
Default


You may be correct. I may not have read the entire spec sheet. I would have to investigate further but it may be allowed for your application.
brric is offline   Reply With Quote
Old 09-24-2010, 06:49 AM   #6
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Default


Thanks Merci for the pics but it's neither. These are single cables.


A building electrican just walked by my desk where I work and I asked him. He said I can't run this cable inside.
He said to run #2 alum xhhw in conduit all the way for 100 amp. From the panel underground to the subpanel.
blorentzen is offline   Reply With Quote
Old 09-24-2010, 07:48 AM   #7
Super Moderator
 
joed's Avatar
 
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 18,829
Rewards Points: 24,000
Blog Entries: 11
Default


No you can't use individual wires without conduit.

Last edited by joed; 09-24-2010 at 12:54 PM. Reason: fix typo and add word OUT
joed is online now   Reply With Quote
Old 09-24-2010, 08:07 AM   #8
Newbie
 
Join Date: Sep 2010
Posts: 5
Rewards Points: 10
Default


Joed,
Your statement makes me more confused. What is conduit for if not for individual wires?

XHHW: Understanding XHHW Wire

The initials, or acronym, for XHHW stand for Cross-Linked High Heat Water Resistant Insulated Wire. This XHHW is the designation for a specific insulating material for electrical building wire and cable. The term XHHW also designates the temperature rating as well as the conditions that the cable can be used under.

XHHW insulated wires are generally used in residential, commercial and industrial buildings and installations for the purpose of power distribution. The cable is manufactured in both copper and aluminum conductors and typically ran in conduit or other approved raceways for services, feeder and circuit wiring. XHHW insulation is rated by the Underwriters Laboratories (UL) to be suitable for use in dry locations up to 90 degrees Celsius, or wet locations up to 75 degrees Celsius. However, there is a newer and much more popular insulation version of XHHW with the designation of XHHW-2. This allows the insulation to be suitable for use in both wet and dry locations up to 90 degrees Celsius.

Last edited by blorentzen; 09-24-2010 at 08:56 AM.
blorentzen is offline   Reply With Quote
Old 09-24-2010, 09:28 AM   #9
I=E/R
 
a7ecorsair's Avatar
 
Join Date: May 2010
Location: Minnesota
Posts: 2,052
Rewards Points: 1,000
Default


Quote:
Originally Posted by blorentzen View Post
Joed,
Your statement makes me more confused. What is conduit for if not for individual wires?
Maybe joed missed a semi colon
Quote:
No you can't use individual wires with conduit.
No you can't; use individual wires with conduit.
a7ecorsair is offline   Reply With Quote
Old 09-24-2010, 12:55 PM   #10
Super Moderator
 
joed's Avatar
 
Join Date: Mar 2005
Location: Welland, Ontario
Posts: 18,829
Rewards Points: 24,000
Blog Entries: 11
Default


Post corrected. I should have proof read it better.
joed is online now   Reply With Quote
Old 09-25-2010, 12:02 AM   #11
" Euro " electrician
 
frenchelectrican's Avatar
 
Join Date: Apr 2006
Location: WI & France { in France for now }
Posts: 5,369
Rewards Points: 2,000
Default


Quote:
Originally Posted by blorentzen View Post
Thanks Merci for the pics but it's neither. These are single cables.


A building electrican just walked by my desk where I work and I asked him. He said I can't run this cable inside.
He said to run #2 alum xhhw in conduit all the way for 100 amp. From the panel underground to the subpanel.
I make that part bold that mean you have to run the whole thing in conduit and no you can not run indivual conductor without conduit so it is clear on this one.

Merci.
Marc
frenchelectrican is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
replacing wire inside ac unit kevinv HVAC 2 07-30-2010 05:27 AM
How do I wire these switches? keano016 Electrical 2 10-07-2009 10:19 AM
Outlet With Swith and Older (White, Black, Red) Wire CaptChaos Electrical 18 09-14-2009 11:17 PM
What is the best way to wire this? RST Electrical 8 08-18-2009 11:29 PM
Low Voltage Wire Shorting Rdakota06 Electrical 3 07-22-2009 01:15 PM




Top of Page | View New Posts