480volt

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About 480volt

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    San Francisco Bay Area

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  1. Bracers

    My kids are hard-core LARPers. It’s probably my personal conceit that I use armor terminology to describe them, but that’s what I intend them as when I make them.
  2. Bracers

    I’ve always used vambrace for forearm protection pieces. Not sure where bracers originated
  3. Has anyone tried Un-doing saddle stitching?

    Bob Douglas sells a tool called a “stitch line channeler” and put up a video about a year ago on Facebook demonstrating how to use it to cut stitches.
  4. Trouble with setting copper rivets

    If you drive the burr down too far, the compressed leather can force it back up, ruining the interference fit between the burr and the rivet. Might as well toss it at that point. When I cut the shank of the rivet, I try and cut from several different angles if possible, to minimize the ridge left by the sidecutters. When I’m at home, I set rivets on an anvil (Peter Wright) or on a 1/4” steel plate. I’ve also set rivets out in the field using the cheek of a two-pound single jack as an anvil.
  5. Copper rivet setting question

    RJ Leahy of San Francisco has good information on rivet sizing on their website. https://www.rjleahy.com/
  6. Bad motor

    In regards to your Bernina problem, it’s a bit vague to say “they installed solar”. Is this a completely off-grid house, with panels charging a battery bank? I’ve seen such a system struggle with motor loads (table saw, skil saw, etc). If it is off-grid, I’d ask your customer to hook up a big load like a table saw or appliance and meter the voltage output. The more the voltage sags, the more current will be drawn by the load. In regards to your other solar installation, if you are putting in a system on a building with an existing service from a utility, than you should have no problems. The inverter is typically tied to the panel via a breaker, and feeds the panel in parallel with the service. You won’t see any difference on circuits fed from this panel, as the contribution from the inverter is just supplementing what the utility is providing.
  7. Barry King Edgers.

    If you buy Douglas tools, you are dealing direct with Bob and Lee Douglas. Lee is quick about shipping, the flat-rate box usually hits the mail in a day or so. Quality has been uniformly excellent, and for those that care, you are supporting a small domestic maker of fine tools, though I could say that of others as well.
  8. Mauled By The Bearman

    He’s pretty active on FB, much as I despise it, that may be the best way to get his attention.
  9. Campbell / Randall

    Their website seems to be up and running...
  10. Brother A-7200b-405

    Uwe has forgotten more about sewing machines than I’ll ever know, and using an RPC is sound advice, that’s how I would do it. I work with three phase equipment frequently and motors from fractional HP up to about 50 HP. Three phase motors will continue to run if they lose one phase (single-phasing) at reduced HP and torque, but they cannot start themselves on single phase. They just sit there and hum and draw excessive current until you shut it off or it burns up. You can get one to start on single phase if you get it spinning before you apply voltage, but it will happily run in either direction. If the motor rating plate does indicate three phase, and you buy an RPC to feed it, be aware that it can be made to run either direction depending on how you connect it and you likely won’t know what that direction is until you bump it. If it’s wrong, reversing direction just requires swapping any two phase conductors feeding the motor. Good luck, don’t let the smoke out.
  11. You an expat American? Don’t know who else would use “suicide knob”.
  12. Brother A-7200b-405

    Rating plate should tell you what you need to know. Since it says single-phase, first thing I would do is verify if all the conductors in the cord are actually in use. If it really is single-phase 220-240, it should only need two hots and a ground. Ground is always green, everything else is arbitrary.
  13. Question on Ferdco 900B

    It’s slightly possible that Anthony Luberto might have information on the machine. I corresponded with him about five months ago regarding an ASE #9.The Windham Cub web site has since expired, so I don’t know if he is still actively responding to email. classiccub@frontier.com
  14. I didn’t get to see how they moved it, but I once hooked up a big autoclave at Lockheed that had been relocated from an adjacent building. The riggers claimed that the whole package weighed about a million pounds.