This article was posted 03/14/2012 and is most likely outdated.
Mike Holt - Free Resources – Conduit Bending Handout and Sizing Conduit or Tubing Spreadsheet
Free Resources – Conduit Bending Handout and Sizing Conduit or Tubing Spreadsheet
Free Resources – Conduit Bending Handout and
Sizing Conduit or Tubing Spreadsheet
Bill Bamford of Wirelab Services recently updated his 2 informational documents which we offer on our Free Stuff page. Below are links to them and a short description of each.
The conduit bending handout steps the student through the process of hand bending stub-up, offset, back-to-back, 3-point and 4-point saddle bends. It also provides some extra info on bending terminology, making multiple bends on one conduit, bending charts (including examples on calculating final conduit length after bending so that the conduit can be threaded prior to bending).
The spreadsheet is an Excel spreadsheet. It calculates the conduit/tubing size for any number of up to 10 combinations of wire and or cable sizes. It also warns you if you have the potential for jamming as described in Table 1 Note 2 in Chapter 9. It allows cable size input by either fractions or decimal. It includes all conduit, tubing, conductors (bare, insulated, and compact stranded) providing the same results as Annex C with the addition of the ability to mix conductor and cable sizes.
For a complete listing of all the free resources we make available to the industry please visit our Free Stuff page.
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Comments
Nice work! It would be even better if it would calculate the percent used of allowable conduit fill. Many clients ask us not to exceed 80% of allowable, i.e. 32% fill in most cases.
