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  1. #1
    Join Date
    Nov 2001
    Location
    East Texas
    Posts
    929
    I changed out a booster heater for a customer of mine.

    The old heaters nameplate stated 240volt, and there is 240 volt circuit feeding this device.

    The new heater said 208 volt on it's nameplate. Is it ok to run this on 240 .

    The customer purchased the new booster heater. I was just contracted to install it.


  2. #2
    Join Date
    Nov 2004
    Posts
    1,087
    was the rating 208/220?

  3. #3
    Join Date
    Mar 2003
    Location
    Cincinnati
    Posts
    7,977
    10% only gets you to 220. I would say no. Even if it's rated @ 220, 10% takes you to 240.8 which is still to close for comfort imho.

  4. #4
    Join Date
    Nov 2001
    Location
    East Texas
    Posts
    929
    Originally posted by pilotlight
    was the rating 208/220?
    It only said 208.

    I contacted Hatco, the manufacturer, and they said whoever purchased it should have specified 240 volt.

    Glad I did not do the purchasing on this........



    [Edited by Timber on 12-22-2004 at 11:52 AM]

  5. #5
    Join Date
    Jan 2003
    Location
    San Jose, Ca
    Posts
    2,089
    240 VAC = short life. Time to reorder.
    Old snipes don't die they just loose their steam

  6. #6
    I once had troubles with a booster, rated 240, fed 208... contactor chattered till the transformer was wired on the 208 tap... Capacity was down but other that that no troubles. You've gone the other way though, you might be able to swap elements without unpiping and removing the whole shebang. Good luck.

  7. #7
    Join Date
    Sep 2001
    Location
    East Stroudsburg, PA
    Posts
    13,215
    You'll ruin a 208 resistance heater running it on 240, if you can get the breaker to hold.

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