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  • Users: jnims
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  1. jnims

    Economy Fuse & Manufacturing

    Does anyone know if another company sells Economy Fuse & Manufacturing's product line? Looks like they may have been a part of Federal Pacific Electric at one time. Thanks
  2. jnims

    Galling of SS hardware

    When specifying outdoor electrical equipment, we typically specify stainless steel hardware to prevent/reduce corrosion. I have had one manufacturer request the substitution of silicon bronze nuts to prevent galling. In this instance, the hardware is used on a component that might be removed in...
  3. jnims

    Data validation drop down menus

    I frequently use data validation to simplify data entry in my spreadsheets, but have been unable to find a way to adjust the text format of the entries. Is there a way to increase the text size? Thanks
  4. jnims

    filename in spreadsheet

    Is there an easy way to show a spreadsheet's filename and path without typing it in manually?
  5. jnims

    Power Transformer Surge Arrester Connections

    I am looking at the way power transformer surge arresters are connected to ground. Three methods I have seen used are (1) run bare conductors from the transformer's ground pad up the side of the tank to the surge arresters (2) use flat bar instead of bare conductors (3) use the transformer tank...
  6. jnims

    Surge protection for neutral grounding devices

    In the IEEE Guide for the Application of Metal Oxide Surge Arresters (C62.22) and other places, it is stated that a surge arrester may be needed across a neutral grounding device. Unfortunately, these statements don't include any method of determining the need for an extra surge arrester...
  7. jnims

    Breaker bypass switches

    In my office, we have been discussing the necessity for using vacuumn bottles on breaker bypass switches at voltages above 69kV. Traditionally, gang-operated switches with arcing horns or whips are used (not vacuumn interupters) since the voltage accross the parting contacts is small. However...
  8. jnims

    Forte Power Systems

    Has anyone in this forum had experience with Forte and their HV Cable (>69 kV) products? They are a subsidiary of Southwire, but have only been in business a few years. Thanks for any information you can pass along.
  9. jnims

    Power Cables in Parallel

    I am evaluating unequal breaker loading in an industrial substation. The substation consists of three power transformers and six switchgear groups. Two groups are directly tied to each power transformer secondary by air insulated bus. Tie buses between groups were created by parallel runs of...

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