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  1. Replies
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    Three-Phase small Commercial

    tankmdg

    In small Commercial, there are two types of three-phase power available.
    The first is the 208/120 volt, three-phase, four wire wye system.
    The second is the 240/208/120 volt high-leg,...
  2. For 2,000 cfm's to have enough return air, you...

    For 2,000 cfm's to have enough return air, you need two 20 x 25 return grills.
  3. Replies
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    Gan Why don't you try Atlas A/C & Electric. ...

    Gan

    Why don't you try Atlas A/C & Electric.
    They are looking for Technicians.
  4. Replies
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    793

    It could be considered to be South Texas. From...

    It could be considered to be South Texas.
    From San Antonio,Texas all the way down to McAllen,Texas in the Magic Rio Grande Valley.
  5. Thread: Cfm

    by conaire-one
    Replies
    2
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    362

    This is the Formula: CFM = BTU/H divided by...

    This is the Formula:

    CFM = BTU/H divided by Temperature Rise x 1.08

    But to get the right answer need to multiply btu's by sensible heat factor.

    Sensible heat factor = calculated sensible...
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    And you guys have not mention the biggest factor ...

    And you guys have not mention the biggest factor coming up soon? The Court System of United States of America is going Green now!!
  7. Replies
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    2,866

    Agreed!!

    Agreed!!
  8. Replies
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    2,866

    Like somebody said it here in this Forum!! ...

    Like somebody said it here in this Forum!!

    Dupont patent of (R-12 and R-22) are over. Now they want the Billions of dollars of Profit, for the Patents of the newer Refrigerants. Specially of the...
  9. Replies
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    6,368

    I am sorry too!! But the EPA card does not...

    I am sorry too!!

    But the EPA card does not qualify anybody to troubleshoot and or charge a system! Even if it is the neighbor.

    You are the one who is out of line by saying that because he is...
  10. Replies
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    6,368

    Is this a trick question??? Do you endorse...

    Is this a trick question???

    Do you endorse venting!!!

    Do you endorse any not qualified person playing with your expensive R-22 or R410A equipment. :p
  11. Replies
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    RLetts The hack owner should report you too,...

    RLetts

    The hack owner should report you too, Because , as you said you are not qualified to be charging a system ( Superheat Method or not).

    So either get a Life or get a Job.
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    In this case NO! the Industry has not changed. ...

    In this case NO! the Industry has not changed.

    Major Manufacturers in agreement with Goverment are pushing so hard for the Blend of R-410A.

    Why do you think they raise to 13 SEER, Mandatory....
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    6,053

    Piston simply will not work with R-410A, since...

    Piston simply will not work with R-410A, since pistons are pressure dependent.

    Great! so let get rid of that high priced blend R-410A.
  14. Replies
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    21,447

    Covering letter

    There are two simple rules which should apply in almost all circumstances:

    Never send an application without a covering letter;
    Never send the same letter twice.

    A well-written covering letter...
  15. Tim When you said, there are opportunities...

    Tim

    When you said, there are opportunities there in the assembly plant at Selma, TX Can you explain a little more about those opportunities.
  16. Carnak Why! do you have to pay membership? ...

    Carnak

    Why! do you have to pay membership?

    The one who really won the membership, is the inspector! :D

    How the local inspector interprets it;(Code) it usually the final say.
  17. Replies
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    3,231

    Resistance Heater Elements NEC Table 310.16 ...

    Resistance Heater Elements

    NEC Table 310.16

    15 KW's = 62.5 Amps ---6 Awg = 65 Amps (75 C- 167 F) 75 Amps (90 C- 194 F)
    10 KW's = 41.6 Amps ---8 Awg = 50 Amps (75 C- 167 F) 55 Amps (90 C- 194...
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    3,231

    Wire size is determined by the overcurrent...

    Wire size is determined by the overcurrent (Breaker) size, which is determined by the Unit ampacity. The Unit should have a minimum and maximum circuit ampacity listed on its Nameplate.
  19. It seems that whenever idontgetit wants to getit!...

    It seems that whenever idontgetit wants to getit! he will completely knock-down the 50% that disagrees against him.:D :D
    And thats a fact!
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    Yes, your Primary condensate drain is connected...

    Yes, your Primary condensate drain is connected at lavatory side of trap.
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    Formulas:

    CFM= BTUH divided by 1.08 x (db - leaving db)

    CFM= BTUH divided by Temperature Rise x 1.08

    Filter Sizing
    Square feet of filter area = CFM divided by 300
  22. Table 110.26(A)1

    Orlandtech here it goes!

    Provides requirements for clearances away from the equipment, based on the circuit voltage to ground and whether there are grounded or ungrounded objects in the...
  23. Sir I did not wrote the rules and regulations, I...

    Sir I did not wrote the rules and regulations, I only enforce them.
  24. IRC E3305.1. Working space and clearances. ...

    IRC E3305.1. Working space and clearances. Access and working space shall be provided and maintained around all electrical equipment to permit ready and safe operation and maintenance of such...
  25. IRC Definitions Equipment. A general term...

    IRC Definitions
    Equipment. A general term including materials, fittings, devices, Appliances, fixtures, apparatus, and the like used as a part of, or in connection with, an electical installations....
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