safety
DESCRIPTION
Safety in electronics class &TRANSCRIPT
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2319
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SAFETYWorking together in electronics.
Safety is no accident.
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Safety Concerns
•Electrical
•Physical
•Equipment
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Electrical• Cord plugs• Frayed cords• Extension cords• Power Supplies• Grounding of live electronics• One hand meter reading• Batteries• Circuit Breakers• Power Strips
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Unplugging Cords
Unplug by the plug, like this
Not by the cord, like this
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Damaged Cords
Broken insulation may expose live conductors.
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Cord Plugs
Three prong plugs provide a safety ground path for a circuit fault. Never cut off a 3rd prong. Use a 2-prong adapter instead if you must.
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Extension Cords
Be careful of cords across walk ways.
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High voltage & Liquids
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Water & Electricity do not mix!
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Circuit Loading
Circuits, especially power strips can be overloaded if too many things are drawing power. Too much current flow can cause a fire.
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Explosive power in a battery
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One Hand Meter Reading
Check “live” circuits with one hand securely away from voltage. This will protect the technician from fatal electrocution.
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Physical Safety• Burns
• Cuts
• Broken bones
• Breathing
• Eyes
• Ears
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BURNS
• DO NOT touch anyone with the
soldering iron!• Be careful with a heat gun.• Remove rings when working with electricity.
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BURNS
• Heat Gun
• Soldering
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Cuts• Wire cutters
• Wire strippers
• Utility knives
• Saws
• Drills
• Metal shears
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Hack Saw
Use a vise or otherwise hold the work steady for cutting. Keep fingers away from the blade.
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Broken Bones
• Hammering• Metal brake & shear
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Breathing
Paint Solvents Soldering
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Ladders! Big Safety Hazard!
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Eyes• Soldering
• Cutting wire
• Hand tools
• Power tools
• Grinding
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Ears• Grinding
• Hammering
• Music !
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First Aid Kit
The first aid kit is in Mr. Call’s front table drawer
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Fire Extinguisher
The fire extinguisher is located by the back emergency exit door
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Respect• Be respectful and careful with all
equipment and tools.
• Treat others with respect.
• NO HORSEPLAY !
• Playing around with electricity could make you lose your life, your job, your health, or your credit for this class.
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The Speed of Light !
186,282 miles / s
Or 300 million meters / s
Or 7 ¼ times around the world in one second.
The point: You can’t outrun electricity!
Electricity is just a bit slower.