Results 1 to 6 of 6
  1. 01-09-2009, 12:00 PM #1
    bukzin
    bukzin is offline Regular Guest
    Join Date
    Jul 2008
    Posts
    17
    Post Likes

    shielded control cable

    I have seen mention of using shielded cabling between indoor and outdoor
    units on a mini-split system.

    The LG heat pump we installed did not call for this in the installer paperwork.


    Should this be an area of concern?

    We are inclined to run shielded wiring for future jobs.

    Thoughts?
    Reply With Quote Reply With Quote
  2. 01-09-2009, 12:20 PM #2
    MB1211's Avatar
    MB1211
    MB1211 is offline Professional Member
    Join Date
    Dec 2006
    Location
    Northern VA
    Posts
    389
    Post Likes
    Are you referring to the cable to the controller? I think I would run shielded any ways.
    Reply With Quote Reply With Quote
  3. 01-09-2009, 09:14 PM #3
    Texas-Tech's Avatar
    Texas-Tech
    Texas-Tech is offline Professional Member*
    Join Date
    Dec 2007
    Location
    houston, texas
    Posts
    3,787
    Post Likes
    the communication cables between indoor and outdoor units are supposed to be #14 wire. Never heard anything mentioned about shielded cable.
    I'm not tolerating Political Correctness anymore, from now on it's tell it like it is.

    Veto Pro Pak - The best tool bag you'll ever own
    Reply With Quote Reply With Quote
  4. 01-09-2009, 09:32 PM #4
    jpdc
    jpdc is offline Professional Member*
    Join Date
    Jan 2009
    Location
    ontario
    Posts
    50
    Post Likes
    LG does recommend running shielded cable due to any electrical interference or noise that the dc voltage might pick up. Just keep the high voltage separated from the low voltage from the indoor and outdoor unit.
    Reply With Quote Reply With Quote
  5. 01-11-2009, 08:10 AM #5
    madhat
    madhat is offline Professional Member
    Join Date
    Aug 2006
    Posts
    3,048
    Post Likes
    Also only ground the sheild on one end, insulate other end. You don't want it flowing stray voltage back and forth, next to the DC signal.
    I only have to make it work till I retire.
    Reply With Quote Reply With Quote
  6. 01-12-2009, 12:54 AM #6
    AIR PRO's Avatar
    AIR PRO
    AIR PRO is offline Professional Member*
    Join Date
    Nov 2001
    Location
    Port Saint Lucie, FL
    Posts
    1,664
    Post Likes
    Nordyne IQ drives require shielded cable as well as quite a few mini split manufacturers.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules
Contracting Business

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.
HPAC Engineering