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  • Users: TLCPA
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  1. TLCPA

    NEC Table 430.250

    Is there a formula for calculting amperes based on HP for the NEC Table 430.250? The table only goes to 500 HP and I have a 520 HP motor @ 575 VAC.
  2. TLCPA

    Electrical code for Marcellus drilling pads?

    Pennsylvania is getting a lot of drilling pads for Marcellus shale. These drilling pads can have 3 MW or more of diesel generators supplying motors as large as 1600 HP. What is the appropriate electrical code for these drilling pads?
  3. TLCPA

    Siemens Furnas Nordic Soft Starter

    Does anyone know where I can get a manual for a Siemens Furnas Nordic 2000+ 91TE34AFA soft starter? Thank you.
  4. TLCPA

    Can inverters (UL 1741) operate with small genset?

    I have 5-10 kW wind turbines - each turbine has it's own inverter. I have a 146 kW PV array with one inverter. The load is 100kW @ 480Y/277VAC 60Hz. I am installing energy storage (another inverter) to be able to store excess PV energy during the day and use it at night. I want to 'island'...
  5. TLCPA

    Traffic Signal Location

    I am an EE that noticed what I think is a problem with traffic signals located on the far side of the intersection. Drivers are looking at the signal and will stop for a red light where they can see the signal. Stop Here On Red signs and painted stop lines are not seen (they are looking at the...

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