Central USA...
4-circuit control panel for in-house testing, to run timered tests of 240V single phase items up to 2HP...
It's OK to use red for (+) and green for (-) on the 24VDC which runs the timer, current sensors, etc., right?
As it is in-house and not for others, I can use any color...
I have the 6kVA Acme electric T-2A-53329-1S Transformer to install in a testing machine.
Like
http://www.grainger.com/product/ACME-ELECTRIC-Transformer-4WTZ2
Input is 480V 3ph. Three hots and Protective Earth ground.
Outputs will be 240V 3ph and of course readily available off that is 240V...
Surely someone sells such a thing?
I have made my own out of UHMW plastic and screws and fiberglass rod with springs so far. There was a recessed hole to insert the Unit To Be Tested's power cord wires into.... then the fiberglass rods press the strands against the contact screw within the...
IT seems my HR dept discovered that there is no non-compete agreement signed by me in my files. Suddenly they want me to sign one "as a condition of employment"... They seem to think that I had signed one initially, but I have no recollection of that, nor do I have a copy of this document, nor...
I have a fan of diameter 4 ft or so, the outer panel of which is vigorously vibrating, but only in some few installation configurations. I would like to know the frequency of the vibrations that are being observed in order to help devise a solution. I recall seeing little boxes years ago at...
I had the occasion recently to work with a 480V circuit. For a temporary hookup in a University environment, a prior visitor had installed a 240V 20A 3ph +ground female connector body [L15-20] on the 480V cord, which is switched at a fuse/ switch box nearby- perhaps 20 ft of cable. The unit...
