Safety and work practicesQuestion 468 of 1506

What rule applies to soldering on equipment with power supplied to it?

Solder only when the voltage is below 600 V
Solder only with one hand
It must be de-energized before any soldering starts
Solder it quickly before the iron cools

Show answer

Correct answer: It must be de-energized before any soldering starts

Power must be off before soldering.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 10.3: Soldering techniques

Questions last reviewed: 18 October 2026

Red Seal Electrician Practice needs JavaScript to run. Use its questions for practice. The real pass mark is usually 70%. Check it with your province or territory's apprenticeship office.