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  1. ControlThis

    Fluke 1735 power logger

    Thanks for the reply. I just purchased the 1735. I checked out the 1750 that you mentioned. Looks great, just a bit out of my budget right now. Maybe my next toy????
  2. ControlThis

    Fluke 1735 power logger

    Anyone have experience using the Fluke 1735 3 phase power logger. I'm thinking about buying one and wanted to know what others thought about this product. I’m looking to use it for load flow studies in a mfg facility, energy conservation strategies and troubleshooting intermittent problems in...
  3. ControlThis

    Energey conservation with T8 fluorescents

    Thanks for all the input! We will be having a lighting vendor in anyways because we are considering LED lighting in some areas. I will surely ask that they make recomendations based on legal issues and proper lighting levels.
  4. ControlThis

    Energey conservation with T8 fluorescents

    Not much daylight is available. We are using a bunch of occupancy sensors. Problem is that we just had a major recontruction of how the production floor is set-up, so now there's too much lighting in some areas and not enough in others. Good suggestion though on the liability consideration...
  5. ControlThis

    Energey conservation with T8 fluorescents

    I don't have too much experience in dealing with fluorescent lighting. I'm in an industrial facility with a few hundred 8 foot T8 fixtures. We're looking to save money by turning lights off in areas that don't need as much light. Can we achieve this just by pulling bulbs, or does that part of...
  6. ControlThis

    Standard Breaker vs AFCI vs GFCI

    I'm baffled on something pertaining to selection of breakers for a new residential panel. In the NEC2008, the location requirements for AFCI protection have grown substantially. My question is this: With all the places that an AFCI or GFCI are required, where can you still use the standard 5 or...
  7. ControlThis

    Panel-board near oil tank

    The installation is below 600v. Does a panel or wire being near an oil tank constitute as being "exposed to oil"? I agree I should check with the building inspector, but last time I asked him a question on a questionable item, he told me he was not an educational provider??
  8. ControlThis

    Panel-board near oil tank

    I have a question surrounding proposed location for a new panel board. First, I have a 275 gal oil tank for #2 heating oil in a home. The oil tank has a wall built around it with an access door. The inside of the wall is probably within 1 foot of the perimeter of the tank. This room is just...
  9. ControlThis

    difference between mobile home furnace and furnace?

    I've been looking at used oil fired hot air furnaces for my home. I keep running into mobile home or trailer furnaces. What's the difference?? Can I put a mobile home furnace into my single family slab foundation house? Is one better than the other?
  10. ControlThis

    Use nameplate ratings on motor or VFD??

    Questions on the control cabinet nameplate data i need to display on the cabinet: 2. For full load current rating of the machine, would I add the above mentioned motor as 8.2A or 2.21A? 3. Say this was the largest motor. Would I specify largest motor rating on this nameplate as 8.2A or 2.21A...
  11. ControlThis

    Use nameplate ratings on motor or VFD??

    The machine includes 2 VFD's with PLC and low voltage controls.
  12. ControlThis

    Use nameplate ratings on motor or VFD??

    Thank you for the responses! The application is an industrial machine with multiple motors/vfd's with one control cabinet. I sould have included more information as to where I was headed with this. 1.For the supply conductors to the machine, which rating would I use to calculate the load? I...
  13. ControlThis

    Use nameplate ratings on motor or VFD??

    I have A VFD capable of running a 1 hp motor but will only be using a 1/2 Hp. I'm running 208vac, 3 phase, 60 Hz Motor nameplate states 2.21A @ 208vac VFD nameplate states 8.2A @ 200-230vac For the purpose of load calculations and sizing supply conductors, OCPD, and other peripherals, would I...
  14. ControlThis

    how to generate 3-phase 208vac from single-phase 208vac motor

    With all due respect, the 208 in most homes is single phase. If you looked at each of the sine waves, the phases would not be offset in time. You can have 208 with single phase. Hence the reason you see capacitors on the side of most appliance motors in the home to create the phase shift that...
  15. ControlThis

    how to generate 3-phase 208vac from single-phase 208vac motor

    Waross, as far as what I've seen, most 208vac single phase sevice to residential buildings is split phase not coming from 2 phases but one. The secondary coil in the transformer on the pole is split in the middle by the neutral. Neutral to one end of the coil would give you the 120 and end of...
  16. ControlThis

    Machine safety, guard interlocks

    My question specificaly is how do you determine if a safety guard on a machine requires an electrical interlock? Is it through risk assesment? if so, how? Is it if no tools are required to remove the guard? Any insight would be helpful. Also, references to specific standards that would outline...
  17. ControlThis

    Multiple VFD Installation

    This is a fairly small system controling only these two motors. I don't foresee a situation where I would be working on one drive and have a requirement that the other be powered up. Nor would I recomend that the maintenance guys do this either.
  18. ControlThis

    Multiple VFD Installation

    I am designing two .75kw VFD's into an industrial control system. It will be used in the US but the design may also be shared with a sister company in England. My question is regarding the thermal magnetic breaker and EMC filter that will be in the supply lines to the inverters. Can both...
  19. ControlThis

    Fused neutral, industrial control panel

    There is a 3 pole breaker for the 3 phases before the control panel at the bus that supplies this panel, but not on the panel itself. The neutral breaker is on the panel. The 3 pole breaker at the bus supplies power to only this panel. That should be suffiecient, right? It is sized to handle the...
  20. ControlThis

    Fused neutral, industrial control panel

    Thanks for the response! It is on a single pole breaker. Is there a situation where this would be considered appropriate? I'm trying to figure out why this was done and repeated on 30 systems. What would be the best way to describe why this is a significant hazard?

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