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Unformatted text preview: oved for electrical work made since 1997 are marked "Class E." Hard hats made before 1997 are marked "Class B." These markings will be on a label inside the helmet or stamped into the helmet itself. Newer hats may also be marked "Type 1" or "Type 2." Type 1 hard hats protect you from impacts on the top of your head. Type 2 hard hats protect you from impacts on the top and sides of your head. Class E, Type 1 hard hat. Class B hard hat. Page 72 Section 8 Do not "store" anything (gloves, wallet, etc.) in the top of your hard hat while you are wearing it. The space between the inside harness and the top of the hard hat must remain open to protect you. Do not put stickers on your hat (the glue can weaken the helmet) and keep it out of direct sunlight. If you want to express your personality, hard hats come in many colors and can be imprinted with custom designs by the manufacturer. Some hats are available in a cowboy hat design or with sports logos. Never "store" anything in the top of your hard hat while you are wearing it. Class B hard hat in a cowboy hat design. Keep your hard hat out of direct sunlight when you are not wearing it! Use your head and protect your head!
Section 8 Page 73 S A F E T Y M O D E L S TAG E 3 -- C O N T r O L L I N G H A Z A r D S : S A F E W O r K P r AC T I C E S PPE Fact Sheet
Foot Protection (continued)
approval stamp alone does not necessarily mean the footwear offers protection from electrical hazards.) Note that footwear made of leather must be kept dry to protect you from electrical hazards, even if it is marked "EH." Workers must wear protective footwear when there is a risk of foot injury from sharp items or falling/rolling objects--or when electrical hazards are present. As FOOT PrOTECTION with hard hats, always follow the manufacturer's instructions for cleaning and maintenance of footwear. Remember that cuts, holes, What worn soles, and other damage can reduce protection. about non-electrical hazards?
All ANSI approved footwear has a protective toe and offers impact and compression protection. But the type and amount of protection is not always the same. Different footwear protects you in different ways. Check the product's labeling or consult the manufacturer to make sure the footwear will protect you from the hazards you face. How do I choose the right footwear?
The footwear must be ANSI approved. ANSI approval codes are usually printed inside the tongue of the boot or shoe. Footwear will be marked "EH" if it is approved for electrical work. (The ANSI Don't take risks because you are wearing PPE. PPE is the last line of defense against injury! ANSI Z41 = ANSI footwear protection standard PT = Protective Toe section of the standard 91 = year of the standard (in this example 1991) C = Compression rating This code is more complex than the others. Here is how to read it: 30 = 1,000 pounds; 50 = 1,750; 75 = 2,500 (in this example) M = Male footwear (F = Female footwear) I = Impact rating (75 foot pounds in this example--can also be 30 or 50) EH = protection from Electrical Hazards Mt = Metatarsal (top of the foot) protection rating (75 foot pounds in this example--can also be 30 or 50) Page 74 Section 8 Summary of Section 8 Control hazards through safe work practices. Plan your work and plan for safety. Avoid wet working conditions and other dangers. Avoid overhead powerlines. Use proper wiring and connectors. Use and maintain tools properly. Wear correct PPE. Section 8 Page 75 Glossary of Terms
ampacity maximum amount of current a wire can carry safely without overheating amperage strength of an electrical current, measured in amperes ampere (amp) unit used to measure current arc-blast explosive release of molten material from equipment caused by high-amperage arcs arcing luminous electrical discharge (bright, electrical sparking) through the air that occurs when high voltages exist across a gap between conductors AWG American Wire Gauge--measure of wire size bonding joining electrical parts to assure a conductive path bonding jumper conductor used to connect parts to be bonded circuit complete path for the flow of current circuit breaker overcurrent protection device that automatically shuts off the current in a circuit if an overload occurs conductor material in which an electrical current moves easily CPR cardiopulmonary resuscitation--emergency procedure that involves giving artificial breathing and heart massage to someone who is not breathing or does not have a pulse (requires special training) current movement of electrical charge de-energize shutting off the energy sources to circuits and equipment and depleting any stored energy double-insulated equipment with two insulation barriers and no exposed metal parts energized (live, "hot") similar terms meaning that a voltage is present that can cause a current, so there is a possibility of getting shocked fault current any current that is not in its intended path Page 76 Glossary of Terms (continued)
fixed wiring permanent wiring installed in homes and other buildings flexible wiring cables with insulated and stranded wire that bends easily fuse overcurrent protection device that has an internal part that melts and shuts off the current in a circuit if there is an overload GFCI ground fault circuit interrupter--a device that detects current leakage from a circuit to ground and shuts the current off ground physical elec...
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- Spring '09