Electricity Control

PCs and their peripherals use raw alternating current as a power source. While the myriad of plugs, outlets, and line cords used today are generally regarded as quite sage for end users, technicians must often work in close proximity to exposed circuitry. In reality, the odds of electrocution are quite slim, but electricity can injure or kill when handled carelessly.

• Keep the PC unplugged when working inside. As a rule, unplug the PC (don't just turn it off) during upgrades or repairs.
• Use only one hand for "hot" measurements. If you make measurements or probe around inside a powered system (especially inside the power supply), keep one hand behind your back. If you should contact a live wire, there is no pathway through your heart.
• Use properly rated test probe's. If you attemp to measure high through commercial test probes, you can be electrocuted right through the probe's insulation. Make sure the prob you're using is rated for the expected voltage levels.