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ELECTRICAL Index of Building Construction diagrams House illustrations

Use the House illustrations Index pages to find specific diagram pictures. For example, if you would like to find illustration diagrams of "electrical wires", you could use the find feature of your web browser to search for "electrical" or "wires" on the House illustrations Index pages. You can then click the linked text to open the pages with those pictures. Also, you can use the House Illustration navigation menus for the specific category to find and view the diagram pictures.

 

SERVICE DROP AND SERVICE ENTRANCE ELECTRICAL - THE BASICS OF ELECTRICITY
0500 Where does the electrical inspection start?
0501 Electricity - basic concepts
0502 Electrical potential
0503 Electrical resistance
0504 Current flow equals amperage
0505 120-240 volts
0506 Color-coding for typical 120-volt circuit
0507 A simple electrical circuit
0508 Short circuit
0509 Fuses and breakers
0510 Fuses provide protection against
0511 Household wiring is done in parallel
0512 Damaged wire

ELECTRICAL - SERVICE DROP
0513 Service drop
0514 Underground electrical service
0515 Service drop clearances (United States)
0516 Service drop clearances (Canada)
0517 Wire clearances around windows
0518 Wires not well secured to the house
0519 Inadequate wire clearance over roofs

ELECTRICAL - SERVICE ENTRANCE WIRES
0520 Drip loop
0521 Service entrance wires
0522 Drip loop
0523 Using service entrance cable
0524 Bent service masts
0525 Support requirements for service entrances
0526 Service entrance - areas of potential water entry
0527 Poor seal at house-wall penetration
0528 Service entrance cable should not be covered by siding

ELECTRICAL - SERVICE SIZE
0529 Common wire sizes
0530 Determining service size by the service entrance wires
0531 Determining service size by the main disconnect

ELECTRICAL - SERVICE BOX, GROUNDING AND PANELS
0532 Service equipment (service box, main panel or service panel)
0533 Grounding equipment
0534 Panels
0535 Branch circuit overcurrent devices
0536 Breaker and fuse type service boxes
0537 Meter location
0538 Panel clearances
0539 Securing the panel
0540 Panel openings
0541 Panel mounting
0542 Main fuses must be properly sized
0543 Illegal taps
0544 Neutral wires should not by-pass the service box
0545 The main fuses must be downstream of the disconnect switch

ELECTRICAL - SYSTEM GROUNDING
0546 Ground wires let fuses blow
0547 Electrical path for ground and neutral wires
0548 Grounding the gas piping
0549 Arcing and sparks
0550 Electrical path for ground and neutral wires
0551 Where do ground wires go?
0552 Jumper wires
0553 Jumper wires needed
0554 Do not bond neutral and ground wires downstream of service box
0555 Bond service box to ground
0556 Need ground in subpanel feeder wires

ELECTRICAL - DISTRIBUTION PANELS - page 1
0557 Typical arrangement of panel wires
0558 120-240 volts
0559 Pull-out fuse blocks for 240-volt circuits
0560 Special circuit breakers for 240 volts
0561 Common household wire and fuses sizes
0562 Inspecting the service box and panels
0563 Panel clearances
0564 Fuse types
0565 Inspecting the service box and panels
0566 Fused neutrals and old wiring systems
0567 Securing the panel
0568 Panel mounting
0569 Panel openings
0570 Panel clearances
0571 Subpanel wiring - no separate disconnect switch

ELECTRICAL - DISTRIBUTION PANELS - page 2
0572 Subpanel wiring - disconnect by subpanel
0573 Subpanel wiring - disconnect by main panel
0574 Do not bond neutral and ground wires downstream of service box
0575 Need ground in subpanel feeder wires
0576 Double tapping (double lugging)
0577 Pig-tailing to avoid double taps
0578 Overcurrent protection for multi-wire branch circuits
0579 Staggered bus bars on circuit breaker panels
0580 Bus bars in fuse panels
0581 Pull-out fuse blocks for multi-wire branch circuits and 240-volt circuits
0582 Special circuit breakers for 240 volts
0583 Excess sheathing on panel wires
0584 Securing wires
0585 Wires should not cross bus bars

 

ELECTRICITY DISTRIBUTION SYSTEM

ELECTRICAL - BRANCH CIRCUIT WIRING (DISTRIBUTION WIRING)
0586 Common household wire and fuse sizes
0587 Stranded wire for overhead runs
0588 Number of conductors
0589 Common household wire and fuse sizes
0590 Types of connections
0591 Securing wires
0592 Cable support
0593 Wire support with steel studs
0594 Wire clearances from hot ducts and pipes
0595 Edge clearance for wires in studs and joists
0596 Wire support with steel studs
0597 Exposed wiring
0598 Exposed wiring in attics
0599 Stranded wire for overhead runs

ELECTRICAL - KNOB-AND-TUBE WIRING
0600 Knob-and-tube
0601 Knob-and-tube connections
0602 Knob-and-tube wiring - connecting a new branch circuit
0603 Fused neutrals in old wiring systems

ELECTRICAL - ALUMINUM WIRE
0604 CUAL designation

ELECTRICAL - LIGHTS, OUTLETS, SWITCHES AND JUNCTION BOXES
0605 Stairway lighting
0606 How 3-way switches work
0607 Potlights in insulated ceilings
0608 Use proper bulbs for potlights
0609 Poor heat lamp locations
0610 Isolating links needed on pull chains
0611 Reversed polarity
0612 Importance of correct polarity with light fixtures
0613 Wrong-type receptacle
0614 Ground-fault interrupter
0615 GFIs can protect ordinary outlets downstream
0616 Wiring for multi-wire branch circuits
0617 Load miser
0618 Bathroom outlets and switches
0619 Outlets near basins
0620 Outlets should not be above electric baseboard heaters
0621 Outlets in floors or countertops
0622 Garage outlets should be at least 18 inches off the floor
0623 Old push-button switches are obsolete
0624 Furnace switches
0625 How 3-way switches work
0626 Garbage disposal switches
0627 Garbage disposal wiring

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