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  1. The distance is 1,100 ft.

    The distance is 1,100 ft.
  2. The three branches will have circuit protection....

    The three branches will have circuit protection. The electric heater and the motor will have OCPDs provided by the manufacturer. For the electric heat trace, we are installing a 480-240/120V xfmr...
  3. Question about Arktite Plugs and how to split loads..

    We have a temporary installation that includes three loads: electric heater, 20 hp motor, and some heat tracing.

    These will be fed from a common breaker back at some 480V MCC. This 3-phase breaker...
  4. Equipment separation: 4 kV switch gear near a 208 V UPS question

    I have a 4 kV Metal Enclosed switchgear. It is 106" wide, 90" tall, and depth of 37". All access to the interior is done through the front.

    I'm planning an installation of a 20 kVA, 208 V input,...
  5. 3 phase vs 1 phase, and 208V vs 120V. Question about circuit breakers.

    I'm creating an installation plan for heat tracing, and am having trouble understanding how to power it.

    The manufacturer recommends a 2-pole GFCI circuit breaker. The heat tracing cable is rated...
  6. Transformer overcurrent protection on the primary.

    We currently have two 120/208V UPS installations, each with a 480-120/208V transformer, and the transformers are individually connected to a 480v generator connection. This is just a temporary...
  7. 20 kVA UPS installation and upstream transformer sizing

    We're installing a new 20 kVA UPS, with an input voltage of 120/208V.

    Option 1: There is a 120/208V distribution panel with enough spares for the 3-pole breaker required for the new UPS. The...
  8. Right, that's what I would expect.. Any idea what...

    Right, that's what I would expect.. Any idea what the symbol in the markup is used for?
  9. Is this symbol correctly being used for an ammeter?

    Somebody marked up this drawing, and I'm supposed to make the revisions. I'm just questioning if this symbol is correctly being used for an ammeter.

    Does it look like a correct symbol was used for...
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    This heat trace will be installed on a 200 ft...

    This heat trace will be installed on a 200 ft section of process line that moves fuel gas from a fuel filter to a boiler. We mainly want to prevent condensation from forming inside this 4" line. Also...
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    I was quoted for a Thermon BSX Self regulating...

    I was quoted for a Thermon BSX Self regulating heating cable, with an adjustable control thermostat, and a terminator beacon. The cable is rated for 150 F max maintenance temp, the thermostat is...
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    Yes, this is self-regulating heat tracing. And we...

    Yes, this is self-regulating heat tracing. And we are looking at the 8 watts/ft option.
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    Heat tracing installation question

    I'm installing 200 ft of heat tracing, to maintain a fuel gas line at 90 deg F. The temp will be controlled through an adjustable thermostat. The power comes from a 120 V panel that is 140 ft away....
  14. How do I determine if a new circuit breaker will fit into an existing panelboard?

    I have an existing Powell Industries Inc. 100A, 120/208V, 3 PH, 4 W, Type NLAB panel. It's got 18 circuits, with circuit # 14 as a spare.

    Circuits 16 and 18 are currently occupied with a 2-pole GE...
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    21400 Not sure if this is going to show up big...

    21400

    Not sure if this is going to show up big enough to read.. but I found an older test, that shows values before the display failed. Just not sure how to decipher the results.
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    Motor Protection Relay Question

    Let's say that I am replacing my current motor protection relay (GE Lodtrak III) with a GE Multilin 369. I'm hearing from a senior engineer that we need the lodtrak settings so that we can program...
  17. The UPS is supplying three 9 kva transformers for...

    The UPS is supplying three 9 kva transformers for subpanels, and 10+ motorized valves.
  18. By ground detector, do you mean a GFCT?

    By ground detector, do you mean a GFCT?
  19. Choosing a grounding system for a UPS... not sure which to go with?

    I'm spec'ing out a UPS. It's in a nonclassified area, 480V and 50KVA. I can choose either a high resistance ground or a solid ground... What factors should I consider in making this decision?
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    There are no temp or vibration sensors on the...

    There are no temp or vibration sensors on the motor. There are two identical motors, and there is a selector switch to choose between them. And there is a separate HOA for both motors as well.
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    It could be.. I have not looked inside the...

    It could be.. I have not looked inside the enclosure. Only reason I haven't is because it's a pain to schedule time with the electricians, and would have to schedule weeks in advance...:(
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    Question about Motors and HOA wiring

    I have two 3-phase motors, and an HOA switch on both.

    There is a separate conduit for both, from the switchrack out to the motor.

    I'm relying on existing drawings for the wiring information....
  23. Yes, I said that incorrectly. We have a 509S...

    Yes, I said that incorrectly. We have a 509S onsite, and the replacement is quoted as a 509, so it will have a longer shaft. I'm working with the vendor now to see if we can get a 509S instead.
  24. Thanks for the info. Looks like yes, it will have...

    Thanks for the info. Looks like yes, it will have a shorter shaft. Now I just need to see if that will be an issue or not..
  25. Ok, thanks for the info, that helps. I have an...

    Ok, thanks for the info, that helps. I have an existing 4kv siemens motor and I'm ordering a spare from siemens, so same manufacturer.
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