Charts

Copper Wire Ampacity (Chassis Wiring, 60°C–90°C Insulation)

Conservative ampacity for short chassis runs; derate for bundles/heat.

powerwireampawg

CSV awg_ampacity.json

Minimum Inside Bend Radius (Air Bend – Starting Points)

Recommended *minimum* inside bend radius by material and thickness.

bendradiussheetmetal

CSV bend_radius.json

Sheet Metal Thickness (Gauge vs Thickness)

Common gauges for steel and aluminum; verify with supplier specs.

thicknessgaugesheet

CSV thickness_gauge.json

Spark Plug Condition Diagnosis Chart

Visual reference of spark plug tip colors and deposits to identify engine conditions and tuning issues.

spark plugignitionengine tuningdiagnosis

spark-plug-diag.jpg

Tap Drill Size Chart (UNC / UNF / Metric)

Recommended drill sizes for common UNC, UNF, and Metric threads. Sizes are for 75% thread engagement in general-purpose materials.

tapdrillthreadfastener

CSV tap_drill_chart.json

Copper Wire Ampacity (Chassis Wiring, 60°C–90°C Insulation)

Units: AWG, Amps (approx.)

AWG	Amps (approx)
18	10
16	13
14	18
12	25
10	40
8	55
6	75
4	95

Values are rule-of-thumb for automotive chassis wiring with typical insulation. For continuous loads, use 80% of rating. For long runs, consider voltage drop.

Warning: Cannot modify header information - headers already sent by (output started at /var/www/tools.pottsiesfab.com/public_html/charts/index.php:153) in /var/www/tools.pottsiesfab.com/public_html/charts/index.php on line 167

Warning: Cannot modify header information - headers already sent by (output started at /var/www/tools.pottsiesfab.com/public_html/charts/index.php:153) in /var/www/tools.pottsiesfab.com/public_html/charts/index.php on line 168
Material,Thickness (in),Min Inside Radius (in) Mild Steel,0.060,0.060 Mild Steel,0.120,0.120 Aluminum 5052,0.063,0.050 Aluminum 6061-T6,0.063,0.094 Stainless 304,0.060,0.090