I'm using ETAP underground design latest version. If I have two duck banks, one has a layer of fluidized thermal backfill, and the other doesn't, why are they coming out at the same temperatures? See attached.
in this example, Concrete RHO=30
FTP RHO = 40
Earth RHO = 200
I'm using ETAP underground design latest version. If I have two duck banks, one has a layer of fluidized thermal backfill, and the other doesn't, why are they coming out at the same temperatures? See attached.
in this example, Concrete RHO=30
FTP RHO = 40
Earth RHO = 200
I have a 480V 3 phase fan motor (<5HP) that i want to keep running for 14 seconds once the power it cut off. is it possible to connect a string of batteries to the DC bus of the VFD that will keep the DC bus energized in the event of a power outage? the DC bus would also have to keep the...
Hello I am looking for information on the off-gassing or out-gassing (I have seen both terms used) of Electrical PVC conduit at various temperatures. Is this information available??
Reality means you live until you die. The real truth is nobody wants reality.
First of all I am not a chemical engineer so some of the terms I use may be incorrect but I will try to get my point across.
I have an HCL gas issue and I am looking for a table that will show at what PPM level corrosion will start of various materials.
The main materials in question are Steel...
If a breaker has an AIC rating of 100KA ( for example) and it is exposed to a 30KA fault.
should the breaker still operate correctly after the fault 100% of the time OR does the 100KA rating insure that the breaker will operate for the said fault but there is no guarantee that the breaker will...
Looking onto a contract where I would need to engineer projects in Japan. What electric codes govern Japan? Do they have their own equivalent to the NEC?
Ohm's it not just a good idea, Its the law.
