Students must understand that it is Current (Amperage), not just Voltage, that kills.
The "Let-Go" Threshold: Explain the point at which muscles freeze ($\approx$ 10mA to 15mA), preventing a person from releasing a wire.
Ventricular Fibrillation: How small amounts of current ($\approx$ 50mA to 100mA) can disrupt the heart's rhythm.
Path of Travel: The danger of current traveling through the heart (e.g., hand-to-hand vs. hand-to-foot).
Body Resistance: How moisture (sweat/water) and contact area change the body’s resistance and increase shock risk.
Electrical Hazards: Identifying frayed cords, overloaded outlets, and "daisy-chained" power strips.
Soldering Safety: * Lead Poisoning: Proper handwashing after handling solder.
Fume Extraction: The importance of ventilation to avoid inhaling rosin flux smoke.
Thermal Burns: Safe handling of soldering irons (resting in stands, never "flicking" solder).
Mechanical Hazards: Proper use of wire strippers, diagonal cutters, and drill presses (e.g., securing loose hair and clothing).
Eye Protection: When and why safety glasses are mandatory (specifically during soldering and clipping wire leads, which can fly into eyes).
Anti-Static Safety: Use of ESD (Electrostatic Discharge) wrist straps to protect components, not just the user.
Insulated Tools: Identifying tools rated for electrical work.
Fire Safety: Identifying Class C fire extinguishers (specifically for electrical fires) and why you never use water on an electrical fire.
Emergency Power Off (EPO): Locating the "Kill Switch" or main breaker in the lab.
First Aid for Shock: How to safely assist a shock victim (e.g., do not touch them; kill the power first or use a non-conductive object to move them).
The "Three-Wire" System: Understanding the purpose of the ground pin on power tools.
Double Insulation: Identifying the symbol for double-insulated tools that do not require a ground pin.
Lockout/Tagout (LOTO) Basics: Introduction to the industry standard for ensuring equipment stays de-energized during repair.