Understanding Electrical Shock Safety

Direct current is actually five times more likely to freeze your muscles in place than alternating

current. That is exactly why understanding electrical shock is the most important

part of the ATT Comp test. You need to know that just twelve milliamps is enough

to cause severe muscle contractions. When you are actually troubleshooting, remember the golden

rule that a short has zero voltage drop, but an open stops the flow entirely.

Whether you are dealing with transformers stepping voltage or rectifiers swapping AC to DC,

always isolate and insulate. One mistake with a live wire and you won't just fail

the test, you might not make it home.