IEC lesson 108 HW Questions And Answers With Verified Tests

On a jobsite, you must keep tools and materials away from the edge ___ where they can be knocked off onto employees working below. - Answer-scaffold and floor openings When working on a ladder jack scaffold, adequate fall protection devices must be used when the scaffold height exceeds ___ feet above the floor below. - Answer-10 Generally, scaffold planking must be at least ___ inches wide. - Answer-18 Materials falling off scaffolds ___. - Answer-can be prevented by placing screening up to the guard rail ___ can prevent scaffolding accidents - Answer-Good housekeeping and safe procedures ___ may be used to raise worker height on a scaffold. - Answer-nothing The maximum distance between the scaffold and the structure is ___. If you exceed this distance, you must install a standard guard rail. - Answer-14 inches or 18 inches for plasterers and lathers Dissimilar metals and other manufacturer's scaffold parts and materials can't be intermixed unless ___ determines that it is safe to do so. - Answer-a competent person Planking on scaffolds ___. - Answer-cannot be painted, unless it is with a clear material How often should scaffolds be inspected? - Answer-each day before using Ignoring the effects of voltage drop, a 20-ampere branch circuit requires ___ conductors. - Answer-12 AWG copper Where 12 AWG THHN/THWN copper circuit conductors are connected to a 15-amp circuit breaker, the circuit is considered to be a ___-amp branch circuit. - Answer-15According to NEC® Section 240.4(B), if the ampacity of a conductor does not match up with a standard fuse rating, what are you allowed to do? - Answer-Use the next higher standard rating Refer to the Article 100 definition for continuous load in the NEC®. According to 210.19(A) the branchcircuit conductors for a continuous load shall be sized at not less than ___ times the current drawn by the load. - Answer-125% The NEC® defines a branch circuit as ___. - Answer-the circuit conductors between the final overcurrent device protecting the circuit and the outlet(s) Nominal voltage includes a range of actual circuit voltages that are ___ the nominal voltage. - Answerslightly above and slightly below The NEC® requires two separate ___-ampere receptacle branch circuits for kitchens because cordconnected appliances used in residential kitchens (such as coffee makers, toasters, microwave ovens, and slow cookers) use a lot of current. - Answer-20 The NEC® ___ require at least two 20-amp small-appliance branch circuits to supply power to countertop receptacles in the kitchen of a house. - Answer-does For a single-family dwelling with a total of 3500 square feet of occupied area, the minimum number of 15-ampere lighting branch circuits is ___. - Answer-6 Branch circuits that serve a ___ are required to be rated at 20 amperes where installed in a house. - Answer-bathroom, kitchen, or laundry room Section ___ in the NEC® requires that, for determining receptacle placement in dwellings, a wall space includes the space occupied by fixed panels in walls but excludes sliding panels. - Answer-210.52(A)(2)(2) Where fixed glass panels (i.e., windows or non-sliding parts of doors) do not permit installation of wallmounted receptacles, ___ are typically used to satisfy the receptacle spacing requirements of NEC® 210.52(A)(1) and (2). - Answer-floor-mounted receptaclesAccording to the NEC® at 210.50(C), a receptacle outlet for a washing machine must be installed within ___ feet of where the machine is to be installed in a house. - Answer-6