Home Inspection Electrical Questions and Answers Already Passed

Home Inspection Electrical Questions and Answers Already Passed What determines the amount of electricity (amperage) the wire can carry? Size (diameter) How many wires are there from the street into the house in a 240 volt system? 3 conductors The size of the fuses or breakers at the main disconnect will always tell you the how much electricity is available to the house? False What is the min. size wire to provide the house with 60 Amp. service? #6 Cu (copper) How is the electrical system in most older homes grounded? to metal Water supply piping The ground wire should always be clamped upstream of the water meter? True How are electrical systems grounded on rural properties where the oil supply piping into the house is plastic? Both ground rods and metal well casing is used Breakers are safer than fuses, anyhow with fuses should be upgraded to Breakers. True or false False fuses are just as safe as long as properly maintained and installed Fuses are more prone to improperly sized and overloaded? True or false True What is/ are the most common reasons for replacement of knob and tube wiring? Breakdown of cloth covering insulation, buried in thermal insulation, and homeowner splices and repairs are all common reasons for replacement Name an important Improvement between knob and tube wiring and modern cable. The use of grounding Where are GFCI required in newer homes? Ground-fault circuit indicators are required in new homes in kitchen's, bathrooms, unfinished basements, Outdoors, and garages. In most cases, three distribution wires connected to one fuse or breaker is acceptable? True or false False What is the most common electrical flaw found residential? Over fusing A non grounded receptacle within 6 foot of water should be replaced with? GFCI , GFCI Upstream from receptacle , single pole GFCI breaker The maximum number of disconnects allowed to shut off main panel are? 6 What is the correct size copper wire for a 20 amp breaker? 12 copper wire Non-metallic sheathed cables in an attic on top of joist must be? Both protected within 6 feet of attic ladder , Scuttle hole and must be fastened every 4 and 1/2 feet The following closet lighting it is ok Surface mounted or recessed incandescent fixtures with completely enclosed lamps, recessed fluorescent fixtures , mounted incandescent fixtures can be mounted on ceiling with 12 inch clearance Sub panel requirements? Neutral and ground must be separated , must be bonded , must be isolated Grounding rod must be driven to what depth for proper protection? 8 feet A fused neutral ( neutral wire runs to a fuse) is? Unsafe 2 conductor wiring can be used with a GFCI? True Does a sump require a GFCI? Not if it is a dedicated receptacle or circuit What is the minimum required clearance in front of the main electrical panel box? 30 inches wide X 36 inches front clearance is required at breaker box AC cable commonly known as BX , contains a bare aluminum wire. What is its purpose? The wire is a bonding wire and should not be connected or brought into the interior of boxes When a GFCI is installed on a two wire non