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MDShunk. 20945 posts · Joined 2007. #3 · Oct 2, 2007. They make a little set of plastic gauges that you can slip in if there's some exposed conductor to get them around. I got a set years ago, but they're not as helpful as you might think. The lugs smash the conductor into a bit of an oval.
I used weight per 1,000 ft from NEC, but it would probably be better to take a known length, like a new 500ft spool of the same size and wire type and weigh it, and weigh the identical empty spool. If you don't have the wire on spool, use a box, and subtract the weight of the empty box. Here is spreadsheet I created, with a few examples:
For small guage wire not so great. I haven't tried to use it in a pretty long time. When I was buying larger wire on spools , I wanted to be sure of what I was buying was in fact a 1000 foot spool, not a 960 foot one. Or even a 990 ft one. Same thing for cut wire rolled up into a coil.
The wire is conservatively sized as is, a brief inrush will not heat the wire with any noticeable difference. 50 VA does not mean 50 amps fyi. It's just a coincidence that the apparent power rating of 50 VA is the same value as the inrush current of 50 A. Didn't mean to throw you off. In rush impedance is only an issue with really high draw ...
For instance you can smear it onto RJ45 connectors then plug them in. Scotchlocks tend to pull apart for me except on telecom wire. If you need to take it apart use terminal blocks. DIN mount terminals come in say 50-100 per box for around $25. All kinds of colors, multiple levels, snap in splices.
5557 posts · Joined 2013. #3 · Jul 11, 2022. Best way is to weigh it. Full roll weight - empty core/ full roll feet = weight per foot. reweigh to find what is left. Other way is to use a mule tape and full rolls on a long pull. Pull off 50' and measure roll, repeat, repeat, repeat. This way depends on core being same size.
The high volume pump filled multiple test pipes in seconds, 20 feet long, up to 24” diameter. Once it was filled (pressure increased past set point) a turbo pump kicked in to raise pressure to over 1,000 PSI for 10 seconds. Then assuming pressure held to meet spec it was released and another set of pipes were cycled.
6 in x 6 in x 4 in gives us a volume of 144 cubic inches. Converting to mL (144 divided by 0.061) gives us 2,360 mL. Now, if you have all 12 gauge, you can calculate the box fill for connecting one two wire bx to conductors from a conduit. That would be the same space as 5 conductors, given the two marrettes. That number is 143.5 mL.
Here in Chicago land I got guys telling me you cant use solid the inspector will fail you, I have never failed an inspection using 12 solid wire. There's $12- $14 savings between solid and stranded per 500'. I either have a bunch of lazy guys working around me accustomed to the easier softer way.
Dennis Alwon said: The journey believes that because you could use a 25 amp overcurrent protective device the wire needs to be 10 gauge. The issue he/she doesn't understand is that an a/c unit and heat pump and many other motors have overload protection built into the unit. The overload is set so that if the current goes higher than a set ...