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  • Users: LWFB
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  1. LWFB

    How Have You Kept Yourself Sane While "In Between" Jobs?

    Beggar I built a garage between jobs during a 2.5 month period while I was looking for new job. My approach now is to build it now and pay for it when I am back at work. You will be working soon enough and wish you had the time. Good Luck S Whaley
  2. LWFB

    Transformer bonding secondary neutral and ground

    Application is in the US The Frame ground on the transformer is bonded only to the building steel the neutral conductor is bonded to the ground there is no grounding conductor bonded directly to the service entrance. Is this a common installation? Thanks again S Whaley
  3. LWFB

    Solid State Relay Schematic

    ac and dc input we usually drive small heater loads and even smaller solenoids from control circuits S Whaley
  4. LWFB

    Transformer bonding secondary neutral and ground

    I had one of our installers call with the following question. Application, The seconday of a power transformer (45kVa 3 ph) the neutral needs to be connected to ground. In this facility the ground wire is commonly bonded to the building steel structure. Is this common practice or shouldn't the...
  5. LWFB

    Solid State Relay Schematic

    Anybody out there have an electrical schematic for a SSR (not electronic) I need to find a good one to use in our documentation. Thanks in advance S whaley
  6. LWFB

    VFD with multiple fan motors overcurrent protection

    I know the the overcurrent protection line side needs to be fast interrupt. What is the concensus for overcurrent on the load side with multiple fan motors. Any concerns for multiple motors on single drive Any help appreciated.
  7. LWFB

    Sizing conductors of shielded wire for 4-20 loops?

    How do you determine the shielded wire size for a control or monitor loop for 4-20 signals. I have seen my company commonly use 18 ga in the field on temperature equipment for signals, and for short runs 22 ga but I need to determine maximum runs for each sized based on something other than...

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