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Jim Port

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Everything posted by Jim Port

  1. Jim Port
    In service equipment it could be used for either a grounding or grounded conductor. A grounded conductor that was too large for the neutral buss could be installed there. That lug is only listed for use with one conductor.
  2. Jim Port
    Those rods should be driven below ground. The Code calls for 8' of direct ground contact. Rods are commonly 8' long so leaving a few inches out does not give the required ground contact.
  3. Jim Port
    I am not sure whether you are asking about the service entrance cables or the wiring installed by the power company. The NEC tables are used to properly size the service entrance conductors. The conductors under control of the power company are sized based on a different set of rules and result in being several sizes smaller than the SECs.
  4. Jim Port
    As someone else said sometimes the only difference is a sticker needs to be removed to change from non-IC to IC. Both have the thermal cutoff. Non-IC just needs to maintain a 3" spacing from insulation. Air-tight is required in some areas energy conservation or building codes, but this is not universal.
  5. Jim Port
    It is not always fine to ground to the metallic box. The wiring method would need to be listed as an acceptable grounding method. Not all metallic cables were able to be used as they lacked the bonding strip. Without the strip the sheath can be a high resistance ground path. I have seen older cables glowing red from a short and would not trip the breaker due to this poor conductivity.
  6. Jim Port
    With the older NM cables the grounding conductor was back-wrapped around the sheath where it enters the box and was secured by the cable clamp. This would ground the box, although probably not as effective as a grounding screw.
  7. Jim Port
    How would you check to see if the enclosure was properly bonded if you don't look inside?
  8. Jim Port
    Mike, you are correct that the plate cannot hold the device to the face of the surface. Box extenders need to be used. Some have tried spacers like nuts over the screws to hold the device tight to the box and allow the device to be flush with the surface, but this is not acceptacle as the box would still be too far recessed.
  9. Jim Port
    The length of unfused conductors or cables inside the building need to be "as short as practical" to satisfy the NEC. Outside there is no limit. Some areas commonly allow 5-6'. Both references to voltage drop in 210.19 and 215.2 are FPN's, (Fine Print Notes) and are not enforceable.
  10. Jim Port
    In all the ones in the link posted by Tom I have ever seen do not contain a junction box. I like the ones by Arlington as a much nicer alternative. aifittings.com
  11. Jim Port
    I wondered if the neutral was cut off from the SER? if that was the case why not use the insulated neutral and use the grounding conductor as a redundant ground or leave it disconnected. Matt, is there a disconnect ahead of this panel?
  12. Jim Port
    The large headed green screw on the left is the panel bond screw. There should not be a wire connected under that screw like you have seen in other panels. It screws directly into the metal enclosure. Terminating a wire under the screw would stop it from engaging the metal enclosure. That cable feeding that panel looks like SE-R, not SE-U, based on the way the bare AL conductor looks. SE-U has the ground spirally wrapped around the two hot conductors. This one looks too tightly wound and does not appear to be individual strands. It looks factory braided.
  13. Jim Port
    I just happen to have one without a mast on my house, Smart ass. Click to Enlarge 39.95 KB There's enough Al in that TV antenna to pay for a weatherhead. [] OK, now we can pick YOUR place apart. [] You've got a bare neutral going into your weatherhead. Doesn't that need to be an insulated cable? Also, I see you hate painting as much as I do. That pic shows Type SE cable. The neutral is bare. no issues.
  14. Jim Port
    Amp was only supposed to lease the tool to people that had received the proper training. Not saying it can't happen.
  15. Jim Port
    You do not have a sub panel on the left. You have one feed into to two panels. Each panel should have a main.
  16. Jim Port
    There are normally dimples built into the panel to provide the air gap.
  17. Jim Port
    Those plastic panels were called Trilliant by Square D. Might have a hard time finding a replacement breaker. Those blue plastic Carlon boxes have a 2 hour fire rating.
  18. Jim Port
    Given the age of the panel, other items probably need to be replaced due to age and condition. Are you asking about for your house or a customer? If for a customer, why don't you let them get the prices? If for your house send me a PM.
  19. Jim Port
    Didn't know there was a connection between the two pics. I thought it was two separate items.
  20. Jim Port
    And the problem with this is?
  21. Jim Port
    Jack, This would be a ground rod or some other form of electrode, not a grounding conductor run with the feeder. The ground rod would be required regardless, unless the outbuilding is served by a single circuit. This would apply whether the feeder was a 3 or 4 wire.
  22. Jim Port
    I agree that 240.24(A) regarding the maximum height being exceeded would be the best site. I was aware of 240.24(F), not over steps, but the OP said this was over a landing. In the Mike Holt "Changes to the NEC 2008" his analysis states that panel can be over landings. I would tend to agree. While the landing is part of the stairway it is not steps.
  23. Jim Port
    Which part? I can't find anything in 110 that would prohibit this. - Jim Katen, Oregon I doubt that many would think that 110.26 "to permit ready and safe operation and maintnance" would be meet. I would also challenge the depth of the workspace meeting the 36" depth if a ladder were used to gain access to work in the panel. I would also note that this could be argued that this is not dedicated space as required.
  24. Jim Port
    While you say the panel is accessible from the side there is no way it will meet the workspace requirements in Article 110.
  25. Jim Port
    Are these conductors under the utilities control or the homeowners? Could you please post a pic?
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