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...
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...
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...
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...
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?
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...
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...
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...
Looking for insight on the neutral being fused inside a control panel that runs a couple servos, plc, and some other control stuff. It's acctually protected with a thermal magnetic breaker. The panel is 208vac, 3ø, 20A supply with neutral conductor also being supplied. We have quite a few of...
I have a squirell cage blower in a hot air furnace. The blower has various small holes around the housing (pressure side) of the blower. Looks almost like they're for mounting various things to the blower housing. I've seen brand new furnaces with holes like this almost like they are supposed to...
I'm looking for good techniques to get consistent / adjustable speed control of a web that is pulled from a motor that winds material onto a shaft. To get the web speed to remain steady, the motor will have to constantly adjust speed because the diameter of the roll will change as material is...
Anyone know where I can buy an IP65 or 66 enclosure that has measurements of 1000mm(H) x 800mm(w) x 300mm(d) in the united states? Anything I can find in the states is Nema with imperial dimensions.
Any help greatly appreciated!!!
Question about protecting plc contacts and other sensitive components from inductive loads. Specifically solenoids that actuate air cylinders (24vdc), electric clutch coils (24vdc and 110vac, and contactor coils(24vdc).
When is it best to use a simple diode, and when is it best to use a...
