(206) 949-5683, Top Rated Plumber, Seattle
Page 2 of 2 FirstFirst 12
Results 16 to 19 of 19

Thread: Choosing Electric Space Heater for Emergency.

  1. #16
    Electrical Contractor/Instructor jwelectric's Avatar
    Join Date
    Jun 2007
    Location
    North Carolina
    Posts
    2,522

    Default

    Quote Originally Posted by Glennsparky View Post
    Quote Originally Posted by Speedy Petey View Post
    Please tell me where I can find this in the NEC. Thanks.
    For 120V circuits, 1440 Watts will max out a 15A breaker. 1920 Watts will max out a 20A breaker.

    You have to add up the heater watts and the watts of anything else plugged into that circuit.
    It is not the breaker that has a limit to the amount of amperage that can be plugged in but the receptacle has a limit that can be found here
    Table 210.21(B)(2) Maximum Cord-and-Plug-Connected
    Load to Receptacle

    For a 15 amp receptacle be it on a 15 or 20 amp circuit the max load is 1440 watts

  2. #17
    Licensed Electrical Contractor Speedy Petey's Avatar
    Join Date
    Jun 2007
    Location
    NY State, USA
    Posts
    975

    Default

    Quote Originally Posted by jwelectric View Post
    It is not the breaker that has a limit to the amount of amperage that can be plugged in but the receptacle has a limit that can be found here
    Table 210.21(B)(2) Maximum Cord-and-Plug-Connected
    Load to Receptacle

    For a 15 amp receptacle be it on a 15 or 20 amp circuit the max load is 1440 watts
    My point exactly.
    I think people confuse this section for cord and plug connected equipment with total permissible circuit load, which is found in 210.24.
    210.23 Permissible Loads.
    (A)
    (1) Cord-and-Plug-Connected Equipment Not Fastened in Place.
    The rating of any one cord-and-plug-connected utilization equipment not fastened in place shall not exceed 80 percent of the branch-circuit ampere rating.
    IMO if a plug fits the receptacle the load is OK. For instance, how can a 1500 watt heater, or an 1875 watt hair dryer legally come with a 15A plug since 210.23(A)(1) deems it illegal? The wattage ratings are either skewed, or they have some sort of "by" with regard to the code.

  3. #18
    Jack of all trades DonL's Avatar
    Join Date
    Mar 2011
    Location
    Houston, TX
    Posts
    3,637

    Default

    I have a Heater that has 1300 or 1500 W and it will heat the internal thermostat so that it cycles on and off even if room temperature is cold.

    That helps to save the outlet, but if it wasn't for the High Temperature Line cord then you could have problems, It does get Hot.

    When the plug gets dirty, a little resistance makes a lot of heat when powering a 1500 Watt load.


    Some of the Low Wattage heater models are good to run off of a portable generator.

    Wood may be better for emergency heat. Or a Fat Lady, but food is expensive.


    Have fun.
    Theory only works perfect in a vacuum.

    Cyber Security Protection for Windows C:\ > WWW.WinForce.Net

  4. #19
    Sprinkler Guy Wet_Boots's Avatar
    Join Date
    Mar 2007
    Location
    Metro NYC
    Posts
    798

    Default

    speaking of high-temperature line cords, is it no longer possible to get some heater line cord (HPN) cut to length at a hardware store - I haven't seen any offered that way for years and years

Similar Threads

  1. Need help choosing a water heater
    By jestyr in forum Water Heater Forum, Tanks
    Replies: 17
    Last Post: 04-17-2013, 05:42 PM
  2. Power Out From Electric Space Heater
    By Kiko in forum Electrical Forum discussion & Blog
    Replies: 16
    Last Post: 01-31-2013, 01:03 PM
  3. Safer: Electric Space Heater Or Bathroom Heater/Exhaust Vent
    By Briandl in forum Shower & bathtub Forum & Blog
    Replies: 2
    Last Post: 02-15-2011, 12:40 PM
  4. Choosing a water heater
    By CarlH in forum Water Heater Forum, Tanks
    Replies: 19
    Last Post: 02-06-2009, 06:20 PM
  5. Toilets with space for an electric baseboard
    By Perfectionist in forum Toilet Forum discussions
    Replies: 17
    Last Post: 04-07-2007, 04:31 AM

Bookmarks

Posting Permissions

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