Reference sheets for the workshop
The chart you need. Ready to print.
Clear, checkable reference charts for the bench, toolbox and jobsite.
Every column on every sheet names the standard behind it. 10 more charts are drafted and held until each one is checked.
Sources mapped to columns
Not one citation under the table. Each column names the document it came from, and the build fails if a column has none.
Date last checked
Shown on every chart. The date something was checked is a fact; a date for the next check would be a promise.
Print, PDF, PNG
Sheet orientation comes from the table itself, so wide charts print landscape and narrow ones portrait.
Charts on the site
3 published. Every figure recomputed on each build.
Browse by trade
Real counts, computed from what is on the site.
Built to be checked.
Sources per column
A wire table takes its diameters from one document and its resistance from another. One source line for both would be wrong, so there is one line per source with the columns it covers listed beside it.
Held until checked
10 drafted charts are not on the site, and one column inside a published chart is held too. A held chart counts as work, never as a chart.
Conditions on the sheet
Plating, lubrication and temperature change the number, so they sit next to it, on screen and on the printed sheet, not in fine print.
Ampacity is not a property of a wire size
It is therefore not a column on the wire gauge chart. It gets its own page,
with NEC 310.16 and the 240.4(D) limits, or it does not ship.
Outfit your shop class.
Free printable sheets that name their standards, so students can see where a number comes from. Sized for handouts, stations and classroom walls.