ELECTRIC PANELS
Saturday, October 20, 2018
Here’s links to a collection of our blog posts about "ELECTRIC PANELS":
• Why is there a 3-phase breaker in a single phase electric panel with only two bus bars?
• What causes copper wires to turn green or black in an electric panel?
• What is the maximum number of circuit breakers allowed in an electric panel?
• When should a corroded or damaged electric panel cabinet or disconnect box be replaced?
• Why is spray paint on the bus bars of an electric panel a safety defect?
• Why is it unsafe to bond neutral and ground wiring at subpanels?
• What are the code requirements for an old fuse panel/box?
• What is a tandem circuit breaker?
• When did arc fault circuit interrupter (AFCI) breakers first become required?
• Can an electric panel be located in a closet?
• Can an electric panel be located in a bathroom?
• Can you add circuit breakers by different manufacturers to an electric panel if they fit?
• My circuit breaker won't reset. What's wrong?
• What is a split bus electric panel?
• How do I identify a combination AFCI (CAFCI) circuit breaker?
• What is three phase electric service?
• What is a reliable way to tell if the electrical service is 3 phase or single phase?
• Can a doorbell transformer be installed inside an electric panel?
• What does a circuit breaker with a yellow or white test button indicate?
• How far away should a sink be from an electric panel?
• What are the requirements for NM-cables entering an electric panel box?
• Can a washer or dryer be located in front of an electric panel?
• Why do some wires in an electric panel have tape wrapped around them near their connections?
• Why is a fuse box/panel an insurance problem for homebuyers?
• Why is bundled wiring in an electric panel a defect?
• What is the difference between GFCI and AFCI circuit breakers?
• What is the voltage rating of a house electrical system?
• Why are old electrical components not always "grandfathered" as acceptable by home inspectors?
• What happens when you press the "TEST" button on a circuit breaker in an electric panel?
• What is a Dual Function Circuit Interrupter (DFCI)?
• What is the difference between "grounded" and "grounding" electrical conductors?
• What does it mean when a wire is "overstripped" at a circuit breaker?
• Why is there a GFCI breaker in the electric panel for the bathroom shower light and exhaust fan?
• Why is an old fuse panel dangerous?
• Why are Zinsco and Sylvania-Zinsco electric panels a problem?
• Can an electric panel be mounted upside down?
• Who is the manufacturer of those "bad" electric panels?
• Can multiple neutral or ground wires be secured under the same terminal in an electric panel?
• What is a lock device on a circuit breaker for?
• Why is the circuit breaker stuck in the middle?
• What is the gooey stuff on some of the wire connections in the electric panel?
• What is a "missing twistout" at an electric panel?
• Can an electric panel be mounted sideways-horizontally?
• What is a double tap at a circuit breaker?
• What is the right electric wire size for a circuit breaker in an electric panel?
• What is the life expectancy of a circuit breaker?
• My circuit breaker won't reset. What's wrong?
• Why do some breakers in my electric panel have a "TEST" button on them?
• What is the right size electric panel for a house?
• The electric panel is marked "Trilliant" and it's all grey plastic. Is it alright?
• What do I need to know about buying a whole house surge protector?
• Why is an undersized wire between a circuit breaker and a whole-house surge protector device acceptable?
• Is a refrigerator required to have its own dedicated circuit?
• What is the maximum allowed height of a circuit breaker (OCPD) above the floor?
• What is the maximum height you can mount an electric panel above the floor?
• What is the code required clearance in front of an electric panel?
• What is a "missing knockout" or "open knockout" in an electric panel box? Why is it a problem?
• When did the code first set a limit of one neutral wire (grounded conductor) connection per lug/set-screw in an electric panel?
• What is the main bonding jumper and where do it find it in an electric panel?
• What is a “bus stab” in an electric panel?
• What is a "backfeed" main breaker at an electric panel?
• How do I find out the manufacturer of an electrical panel?
• Where do I find the the main electrical breaker/disconnect to shutoff power for a condominium?
• What causes a hot circuit breaker in an electrical panel?
• Why is the National Electrical Code (NEC) so hard to understand and complicated?
• Why is there no main shut-off breaker in my electric panel?
• Why did my generator hookup get tagged as defective by the home inspector?
• Can an unused (spare) circuit breaker remain in an electrical panel or does it have to be removed?
• Can circuit breakers be installed upside-down, with the breaker "ON" in the down position?
• When did circuit breakers replace fuses in homes?
• How can I tell the age of a Square D electric panel from the serial number?
• Should I buy a house with a fuse panel/box?
• How dangerous is rust and corrosion inside an electrical panel?
• Does a subpanel require a main breaker by code?
• What is the six breaker throw rule?
• Is a home inspector allowed to open an electrical panel?
• Why are Challenger electrical panels not insurable?
• When did they stop using aluminum wiring in houses?
• Can you splice wires in an electrical panel?
• Are double tapped breakers illegal?
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