This is a draft cheat sheet. It is a work in progress and is not finished yet.
The fundamentals of electrical safety can be overlooked, especially by seasoned electricians. It's worth reviewing a few safety tips, both for the novice electrician and the veteran.
Use a meter that meets accepted safety standards for the environment in which it will be used.
Use a meter with fused current inputs and be sure to check the fuses before making current measurements.
Inspect test leads for physical damage before making a measurement.
Use the meter to check continuity of the test leads.
Use test leads that have shrouded connectors and finger guards.
Use meters with recessed input jacks.
Select the proper function and range for your measurement.
Be certain the meter is in good operating condition.
Follow all equipment safety procedures.
Always disconnect the "hot" (red) test lead first.
Don't work alone.
Use a meter that has overload protection on the ohms function.
When measuring current without a current clamp, turn the power off before connecting into the circuit.
Be aware of high-current and high-voltage situations and use the appropriate equipment, such as high-voltage probes and high-current clamps.