I have 6 paralleled neutrals from 6 separate breakers located in the main panel. All are 120v circuits. This is in a 7000 sq ft, 3-story residence. I...
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Field tranmitter has 4-20 ma output which is connected to plc. plc output supply to transmitter is 24Vdc. but in field transmitter side receives only...
I recently tried out a 120/2403 ph. delta 100 kW standby generator for a hog facility. On the generator's digital readout the load was at 50 kW at a...
I have a set of plans that call for Exterior emergency egress lighting?? Next day electical supply house does not have a clue(nor do I) What...
We have around 50 distribution panels (120/240V) spread on 5floors. We need to monitor loss of voltage at individual panels. We are not going to...
.5 HP pump, 230Volts, Single phase, Full load Amps=8.5, Locked Roter Amps= 30.1A, NEMA Start code "R" Primary voltage is 480V. What size single...
Hello All, We are doing some maintenance to some old Allis Chalmers size 3 motor starter/contactors with CAT ID # XL-3CC0. In regards to...
600' run, 500a load, Al wire run in EMT ---277v. I am coming up with (3) 750 per phase. Is that correct? Thanks
I did a load calc for a project using a load calc program. (the one on Mike holt stuff) and it comes up with 19,220 VA. The inspector turned it down...
Here is the scenario: We need to run a temporary feeders for a tower crane. The total vertical distance 800' but the first run will be to the 5th...
Hi, in the electrical installation code of my country says something like this: if a neutral point is missing or can not be found, one of the phases...
Newbie here with a question. If you are using, say a 10 hp 460v/3ph/60hz VFD to power a motor driving a high inertia load. This motor is on an...
Hi All, I have a question, If I have a 400 amp riser feeding 225amp (main bkr) w/ feed thru lugs panels on the basement, first and second floors. ...
I wonder what is the main principle when you design the foundation earth resistance to guarantee an effective protection against short circuit...
Was wanting to see what ideas others have on hooking up an portable generator mounted on a trailer. I was thinking of Mounting a 200A SE rated...
Guys, Cautionary Example ! Came across a Kitchen Circuit, for Dishwasher/Disposal and Kitchen Countertop. with 240 V on the Countertop...
I have a 120/240 Delta 4 wire service powering a group of hog finishers. I would like to make an estimate of the operating cost per hour with the...
Got a call today to meet a man from a bank on a foreclosed property. On the phone he tells me that he needs a quote on "cleaning up the panel" and...
Can anyone here recommend a good old work style fan box. I have got several fans to install in vaulted ceilings(5/8 drywall) that I don't have...
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