Results 1 to 7 of 7
  1. #1
    Join Date
    Nov 2013
    Posts
    79
    Post Likes

    Am I correctly measuring wattage?

    I use a TED 1000 energy meter to measure wattage on air handlers and condensers. Here is a photo of the set-up at the inverter for the condenser:

    Name:  DSCF6894.jpg
Views: 286
Size:  78.9 KB

    My question is this- to measure the total watt draw, do I need to measure the draw on both black cables? The condenser came in at 1.5 kW when measuring a single cable, which seems low.

    Thanks guys!

  2. #2
    Join Date
    Oct 2008
    Location
    In a kitchen with my head stuck in an oven
    Posts
    1,067
    Post Likes
    Never used or seen a watt-meter before. However, my quick review of the operator's manual explains how to install the CTs (pg 10). You're at a 208/240v panel, so you need to use two CTs.
    ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° °

    "You never know what others don't know." -

    If I can't laugh at myself...then I'll laugh at YOU! -

  3. #3
    Join Date
    Feb 2008
    Location
    Western Wa.
    Posts
    759
    Post Likes
    Just one of the black wires
    UA Proud
    The higher your post count the more you know

  4. #4
    Join Date
    Oct 2008
    Location
    In a kitchen with my head stuck in an oven
    Posts
    1,067
    Post Likes
    Quote Originally Posted by buttwheat View Post
    Just one of the black wires
    What he said...and, from what the instruction manual said, the other CT on the red wire. Point the arrows on the CTs in the same direction.
    ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° °

    "You never know what others don't know." -

    If I can't laugh at myself...then I'll laugh at YOU! -

  5. #5
    Join Date
    Nov 2004
    Posts
    1,312
    Post Likes
    Why

  6. #6
    Join Date
    Nov 2004
    Posts
    1,312
    Post Likes
    Why not just use the wattage formula?

  7. #7
    Join Date
    Jun 2001
    Location
    Moore, Oklahoma, United States
    Posts
    4,636
    Post Likes
    Looks like a simple amp clamp. Make sure the TED knows it's hooked to a 240v source. AC units average about 1,000W per ton @ 95f outdoor temp. Newer units less, older units more. Cooler temps reduce power draw significantly.
    Want to REALLY save energy? Tighten up the house/ductwork and downsize the HVAC system. Smaller units keep stable temps, dehumidify better, run quieter in addition to using less power.

Posting Permissions

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

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.
Quality Home Comfort Awards