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  1. #1
    Join Date
    Nov 2007
    Location
    Toronto
    Posts
    4

    What Voltage can I work on.

    I am a Maintenance Manager and I am trying to understand if a HVAC system is fed 220V or 550 Volts where in the system can I service the unit. I am thinking from the local 220/550 V disconnect to any HVAC Motor or Controls downstream from the disconnect

  2. #2
    Join Date
    Apr 2004
    Posts
    423
    Quote Originally Posted by sconorton View Post
    I am a Maintenance Manager and I am trying to understand if a HVAC system is fed 220V or 550 Volts where in the system can I service the unit. I am thinking from the local 220/550 V disconnect to any HVAC Motor or Controls downstream from the disconnect
    As the owner you can service what ever you want. just don't get anybody killed.

  3. #3
    Join Date
    Nov 2007
    Location
    Toronto
    Posts
    4

    HVAC Qualifications

    Originally Posted by sconorton
    I am a Maintenance Manager and I am trying to understand if a HVAC system is fed 220V or 550 Volts or 110V where in the system can a "Licenced HVAC Tradesmen" service the unit. Can this person work on any or all of these voltages. Everything from 550v motors to 24vdc low voltage controls. I would think any and all of the above just not before the local disconnect feeding said HVAC Unit. It seems to me that there would not be 3 different Licenses required for each of the voltages. Right!

  4. #4
    Join Date
    Aug 2007
    Posts
    971
    Call your local electrical code department and ask them.


    Expect nothing, yet expect the unexpected.
    Press on Regardless, Endeavor to Persevere.

  5. #5
    Join Date
    Apr 2004
    Posts
    423
    Quote Originally Posted by sconorton View Post
    Originally Posted by sconorton
    I am a Maintenance Manager and I am trying to understand if a HVAC system is fed 220V or 550 Volts or 110V where in the system can a "Licenced HVAC Tradesmen" service the unit. Can this person work on any or all of these voltages. Everything from 550v motors to 24vdc low voltage controls. I would think any and all of the above just not before the local disconnect feeding said HVAC Unit. It seems to me that there would not be 3 different Licenses required for each of the voltages. Right!
    Christ go away! don't ask stupid questions! I give you the answer and you tell me YOU think we need three licenses. We are not freakin electricians! and as a Trades Man HVAC I have worked on 2 volts to as high as 13,200 does that clear it up for you.

  6. #6
    Join Date
    Oct 2006
    Location
    Central Texas
    Posts
    649
    Quote Originally Posted by chiller32 View Post
    Christ go away! don't ask stupid questions! I give you the answer and you tell me YOU think we need three licenses. We are not freakin electricians! and as a Trades Man HVAC I have worked on 2 volts to as high as 13,200 does that clear it up for you.
    LOL!
    Sic Semper Tyrannis.

  7. #7
    Join Date
    Nov 2005
    Location
    Shreveport, Louisiana
    Posts
    2,338
    Call a professional HVAC technician to work on the system, remember liability....

  8. #8
    Join Date
    Nov 2001
    Location
    Moose Jaw, Saskatchewan, Canada Occupation:Interprovincial Plumber, Commercial Gasfitter Interests:
    Posts
    2,414
    Quote Originally Posted by sconorton View Post
    I am a Maintenance Manager and I am trying to understand if a HVAC system is fed 220V or 550 Volts where in the system can I service the unit. I am thinking from the local 220/550 V disconnect to any HVAC Motor or Controls downstream from the disconnect
    I'm thinking that in Ontario, YOU can't work on any electrical. Maybe Key or Gruntly will be along shortly.
    I love my job, but paydays Thursday

  9. #9
    Join Date
    Apr 2005
    Location
    CT
    Posts
    25
    The problem is almost all electrician they dont know how an hvac system works, so how can they service a unit if they dont know how it works.

    Have respect for the electricity, it can kill you.

  10. #10
    Join Date
    Jan 2005
    Posts
    605
    I don't think any HVAC company is going to ever have an electrician and a refrigeration airconditioning mechanic riding around together on the same van, to respond to a service call.
    I do know where your question is coming from, with the new electrical code, etc..
    First thing I'll say is, I'd question your your capabilities as a " Maintenance Manager".
    Second thing I'll say is, can you read? If so, read the electrical code. The answer is there.

  11. #11
    Join Date
    Nov 2007
    Location
    Toronto
    Posts
    4

    Take it easy!!!!

    Quote Originally Posted by chiller32 View Post
    Christ go away! don't ask stupid questions! I give you the answer and you tell me YOU think we need three licenses. We are not freakin electricians! and as a Trades Man HVAC I have worked on 2 volts to as high as 13,200 does that clear it up for you.
    Learn how to read...........I never said anywhere that I think you need 3 Licences. I was just asking a question, you don't have to be a #@@.

  12. #12
    Join Date
    Mar 2003
    Location
    Cincinnati
    Posts
    7,977
    Such a loving community of guys here.

    Like said though. You really need to get the latest code book and see what is required.

  13. #13
    Join Date
    Nov 2007
    Location
    Toronto
    Posts
    4

    HVAC Code Book

    Thanks man, I will get the code book! Here is the background, I have 22 Electricians who can't understand why a qualified HVAC guy claims he cannot work on and HVAC system over 120volts. This HVAC guy does not report to me and his boss is supporting his claim. I wanted to get a quick answer so that is why I came here, because I assumed this is where the professionals are. Little did I know!!!! But I do appreciate your feedback.

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