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IBEW fist
MrSandman.Net Field calculators and layout helpers for electrical work.

Field reference

Electrical Tools

MrSandman.Net — Practical electrical calculators for the modern IBEW wireman.
Field calculators and layout helpers for electrical work.

Calculator
Ampacity
Wire ampacity calculations
Calculator
Voltage Drop
Ohm’s law voltage drop calculator
NEC helper
Conduit Fill
NEC conduit fill helper
Layout helper
Conduit Bending
Stub-up and offset layout helper
NEC helper
Box Fill
NEC 314.16 box fill calculator
Calculator
Transformer
kVA and current calculations
External · Study AI
NEC Study AI
2023 NEC exam prep, practice questions, and code navigation for Iowa journeyman electricians.