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  1. Very likely....only listed generators are...

    Very likely....only listed generators are required by the listing to have the neutral to frame bond...a lot of portable generators are not listed.
  2. UL is on record with statements that say all...

    UL is on record with statements that say all manufacturer supplied information is 110.3(B)

    There is an statement that has even stronger wording than this one, but I can't find it.....UL's official...
  3. Even though UL says you can use these breakers, I...

    Even though UL says you can use these breakers, I see them as 110.3(B) violation as the instructions provided with every panel I have ever looked at specify the use of their only breakers.

    UL...
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    Because CMP 5 refuses to accept proposals that...

    Because CMP 5 refuses to accept proposals that would tie the required size of the EGC to the size of the ungrounded conductors and not to the size of the OCPD. Such a change in 250.122 would...
  5. Easy to do with dummy fuses....

    Easy to do with dummy fuses.
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    Did not know that 7200 is a phase to phase...

    Did not know that 7200 is a phase to phase voltage....the only places I have seen it was as phase to ground. Thanks.
  7. The standard applies to portable generators and...

    The standard applies to portable generators and they feel that cord and plug connected equipment needs a bonding path.

    If you buy a small generator listed for permanent installation and not...
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    Not sure how those two fit together....4160 is a...

    Not sure how those two fit together....4160 is a phase to phase voltage and 7200 is a phase to ground voltage from a 12470 volt 3 phase wye system.
    I believe that one of the earlier systems was...
  9. Assuming that you are talking about a 3 phase...

    Assuming that you are talking about a 3 phase corner grounded system, even though the code requires the grounded conductor to be white, I have never seen that in the field.

    The code requires it...
  10. While the code does not require the use of a...

    While the code does not require the use of a listed generator for back up power, the UL standard for 15kW and smaller portable generators requires the generator to have a neutral to frame bond and...
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    It was a product developed because a report from...

    It was a product developed because a report from the CPSC said there are a large number of dwelling unit fires that are caused by arcing faults that are not being cleared by the currently available...
  12. 514.11 only applies to circuits that serve or...

    514.11 only applies to circuits that serve or pass through the fuel dispenser. I have never seen the conduit and wiring for the canopy lights pass through the dispenser. That would be a real pain...
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    And that is exactly the same for breakers, they...

    And that is exactly the same for breakers, they are tested at 100%, but not in an enclosure and not with other breakers. The 80% is an allowance for the additional heat build up with an enclosure...
  14. The online calculator that I use gives me a drop...

    The online calculator that I use gives me a drop of 2.5 volts for 21.7 amps at 1371 feet on 250 kcmil copper.

    I get a drop of 4.8 volts for 58 amps at 1371 feet using 350kcmil copper

    I use this...
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    I have never found a need to put a coupling in...

    I have never found a need to put a coupling in that location either, but I believe it is permitted by the code. That opinion was also voiced by Bob Alexander, a former member of CMP14, in the other...
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    It appears to me that the code does permit a...

    It appears to me that the code does permit a standard coupling between the explosion proof enclosure and its seal.

    I know that others see the word "explosionproof" as modifying all of the items,...
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    I still have very strong doubts that the...

    I still have very strong doubts that the currently available conduit coupling can actually do that. There is little mass there as compared to an explosion proof enclosure and the tightness of the...
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    But an AFCI cannot detect and clear a high...

    But an AFCI cannot detect and clear a high resistance, high heat producing connection...in fact there is nothing currently on the market that can. The best chance of clearing this is GFP, and that...
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    Again not completely correct...while all of the...

    Again not completely correct...while all of the original branch circuit and feeder type AFCIs had GFP protection as part of the device, that is not the case for the currently required combination...
  20. That exception permits a smaller feeder when both...

    That exception permits a smaller feeder when both motors cannot be running at the same time. it would require an electrical control circuit that does not permit both motors to run at the same time....
  21. But since the conductors themselves are well...

    But since the conductors themselves are well covered in the rule, is my opinion that the previous wording was much clearer. You don't even have to think to understand that "physical" would require...
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    Chapter 9 Table 5A is in the code. It is not in...

    Chapter 9 Table 5A is in the code. It is not in an informational annex and the values shown there are the values you use for this calculation.

    So I expect that just means as others have...
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    Looks good to me too...was there anything else in...

    Looks good to me too...was there anything else in the question?
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    I fully understand that concept, but it is my...

    I fully understand that concept, but it is my opinion that the threads are too loose to cause enough pressure drop (the pressure drop does most of the cooling) to cool the gasses to below the auto...
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    That is not how they work. They work by some...

    That is not how they work. They work by some fancy (proprietary) algorithm that looks at an arc signature. To minimize false trips they do no look for an arc signature of a parallel arcing fault...
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