Search:

Type: Posts; User: templdl

Page 1 of 8 1 2 3 4

Search: Search took 2.43 seconds.

  1. Replies
    5$$
    Views
    249

    Ditto to what the others stated. In addition...

    Ditto to what the others stated.
    In addition If the AFCI breakers are as good as the manufacturer's attest I think it is an excellent application. They should provide addition protection. But,...
  2. They must be UL listed and as such much pass the...

    They must be UL listed and as such much pass the same tests as those with CU bus the same as the QO, CH etc.panels that have CU bus.
    Yes, I do prefer CU bus myself but AL is listed the same.
  3. They must be UL listed and as such much pass the...

    They must be UL listed and as such much pass the same tests as those with CU bus the same as the QO, CH etc.panels that have CU bus.
    Yes, I do prefer CU bus myself but AL is listed the same.
  4. Thanks for the reply from the OP. Now that I see...

    Thanks for the reply from the OP. Now that I see what he is referring to I would highly suggest that he contact the manufacture. It must be assured that the contact has the relationships and...
  5. Replies
    23$$
    Views
    982

    How is wire protection at all is amazing to me.

    I think it is amazing how wire is protected at all.
    Basically isn't the wire size selected based upon the 100% non continuous+125% continuous rule?The the wire is selected must carry that calculated...
  6. Wouldn't it be helpful of the OP would reply with...

    Wouldn't it be helpful of the OP would reply with a clarification? It is as if a vague question is asked and then replys are based upon quessing what the OP is asking, a guessing game.
    Also, quite...
  7. Have you contacted the manufacture? I found it...

    Have you contacted the manufacture? I found it common fot those to avoid asking a manufacture as it appears there may be the fear of getting an answer that they don't want to hear. I worker for a...
  8. Replies
    28$$
    Views
    1,206

    I'm not sure that they are getting away with...

    I'm not sure that they are getting away with anything. Are they UL listed as 489?
  9. It looks as if the first 200a panel's (service...

    It looks as if the first 200a panel's (service entrance?) rating is being used to feed the 2nd 200a panel, that the actual load on the first panel may be well served by a 100a panel or even less if...
  10. Replies
    4$$
    Views
    246

    Low voltage can tease the contacts where they...

    Low voltage can tease the contacts where they will not pull in solidly. This can result is the contacts arcing which often results in contact surfaces being damaged and could result in puddling the...
  11. When I see questions similar to this the OP seems...

    When I see questions similar to this the OP seems to avoid stating if this is a theoretical application or if it is a real life design that is being considered. If it is a design being considered...
  12. Replies
    7$$
    Views
    395

    Why are you asking the question? Is this a...

    Why are you asking the question? Is this a question concerning saving money? The cost of #14 MTM for a small job is insignificantly more than using #16. Often times projects are speced with #14...
  13. If I asm to interpret the question cvorrectly is...

    If I asm to interpret the question cvorrectly is this a question of being series rated where an upstream OCPD protects down stream devices? If so then there would be series testings conducted...
  14. Replies
    10$$
    Views
    328

    Good point. Control power transformer.They differ...

    Good point. Control power transformer.They differ from general purpose transformers in that when you have a 480 PRI and a 120 Sec you would anticipate a simple 4:1 winding ratio. But with CPTs they...
  15. Replies
    10$$
    Views
    328

    As an illustration of the PRI to sec winding...

    As an illustration of the PRI to sec winding ratio of a CPT simply feed the sec. as a step up and then measure the voltage at the HV terminals. It will be significantly lower than one would...
  16. Replies
    10$$
    Views
    328

    Comparing the size of the same kva for each...

    Comparing the size of the same kva for each transformer why is the cpt smaller?
    Also, where are you out sourcing the 50hz and if supplying 60 hz to a fan tasted for 50hz the motor may work OK but...
  17. Replies
    28$$
    Views
    1,206

    The breakers that I represented as an breaker...

    The breakers that I represented as an breaker applications engineer we not different. 100% rated breakers all had a solid state electronic trip unit the same a conventional breaker that has a solid...
  18. Replies
    28$$
    Views
    1,206

    What you are trying to do is to optimize the cost...

    What you are trying to do is to optimize the cost of your installation.Compare the cost of your cable based upon the 125%_+100% rule. Remember the is all is your load is in fact continuous then the...
  19. Replies
    28$$
    Views
    1,206

    There still seems to be a belief that 100% rated...

    There still seems to be a belief that 100% rated beakers are magically superior to 80% rated breakers. Remember that breakers protect wire, wire is sized to carry the calculated load. Normally the...
  20. Replies
    28$$
    Views
    1,206

    A 100% breaker is actually no different than an...

    A 100% breaker is actually no different than an 80% breaker if simply swapped out. If you do not apply a 100% breaker per its UL listing to be applied at 100% the it can only be used as an 80%...
  21. Thread: Volt Pen

    by templdl
    Replies
    12$$
    Views
    316

    My Fluke has worked well for years. But with all...

    My Fluke has worked well for years. But with all instrtumernts it is impasrastive not to simply trust them but to test it with a known voltage source first, then test for voltage presence or per the...
  22. Replies
    8$$
    Views
    483

    I'm intrigued that the are attempts to address...

    I'm intrigued that the are attempts to address the OP question by having no knowledge of the relay being referred to. It's like shooting at shadows with no additional input from the OP.
  23. Thread: contradiction

    by templdl
    Replies
    6$$
    Views
    511

    Precisely my point.

    Precisely my point.
  24. Thread: contradiction

    by templdl
    Replies
    6$$
    Views
    511

    Oh well. Even if the home owner were to ID the...

    Oh well. Even if the home owner were to ID the breaker I noticed that the inductions did indicate as to how the average home owner even knows how to check to see if the a beaker is "operable" or not.
  25. Replies
    8$$
    Views
    483

    Interesting. Wouldn't you specify if the relay...

    Interesting. Wouldn't you specify if the relay had an AC or DC coil as both coils assemblies are different. With an AC coil the coils resistasns may be one thing but with an actual AC current applied...
Results 1 to 25 of 200
Page 1 of 8 1 2 3 4