Electrician's Field Toolbox

Toptronic® Assistant is a desktop calculator suite for electricians and electrical designers. Size wires, select breakers, check voltage drop, look up motor full-load current, plan lighting, and reference wiring colour codes — all with the national wiring standard for your country.

Supports NEC, CE Code, IEC 60364, SANS 10142, AS/NZS 3000, BS 7671, NF C 15-100, DIN VDE 0100 and more.

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Features

• Wire Sizing — ampacity with ambient correction
• Breaker Sizing — 125% continuous rule
• Voltage Drop — per-standard limits
• Power & Current — 1-phase and 3-phase
• Transformer — kVA and secondary current
• Motor FLA — NEC 430.250 + overload/SCP
• Lighting — lumens and fixture count
• Energy & Cost — daily/monthly
• Wiring Colour Codes — by country
• Reference — formulas and code sections