Wiring/Cable
Wire gauge and ampacity tables, insulation types, shielded/twisted-pair/coax construction, color codes, and crimp terminals.
Open Wiring/Cable →— Electrical Reference Material
PCB/PWB
Footprint standards, trace width vs. current capacity, layer stackups, via types, copper weight, and component packages.
Open PCB/PWB →Symbols/Drawing Standards
Reference designator letter codes, ANSI vs. IEC schematic symbols, line type conventions, and one-line diagram basics.
Open Symbols/Drawing Standards →Connectors
Pin counts, current ratings, and mating cycle life by connector family — D-sub, JST, Molex, Deutsch, M12, terminal blocks, and mil-spec.
Open Connectors →Motors/Actuators
Stepper, servo, brushed/brushless DC comparison, NEMA frame sizes, sizing formulas, and motor constants.
Open Motors/Actuators →Grounding/EMI
Ground types, NEC bonding tables, cable shield types, and an EMI/EMC standards reference.
Open Grounding/EMI →Conductor Properties
NEC Chapter 9 Tables 8 and 9: conductor area, stranding, diameter, dc resistance, and ac resistance, reactance and impedance by conduit type.
Open Conductor Properties →Raceway Fill & Conductor Dimensions
NEC Chapter 9 fill limits, conduit and tubing areas for 13 raceway types, and insulated and compact conductor dimensions.
Open Raceway Fill & Conductor Dimensions →Enclosure Types
NEC Table 110.28 enclosure type numbers against the indoor and outdoor conditions each protects against.
Open Enclosure Types →Motor Circuit Data
Motor full-load current, Table 430.52 maximum protective device ratings with the next standard size, code letters, and standard ampere ratings.
Open Motor Circuit Data →Transformer Overcurrent Protection
NEC Table 450.3(B) maximum primary and secondary protection for transformers 1000 V and less, with rated current and the largest standard device.
Open Transformer Overcurrent Protection →