How To Look At A House

McGarry and Madsen's home inspection blog for buyers of  

site-built, mobile/manfuactured and modular homes

Frequently Asked Questions about Electrical Grounding

Sunday, February 20, 2022

Here’s links to answers for frequently asked questions about ELECTRICAL GROUNDING:

Why is it unsafe to bond neutral and ground wiring at subpanels?

When was it first required that neutrals and grounds be separated (not bonded) on any panel past the main service panel?

What is the difference between "grounded" and "grounding" electrical conductors? 

What is a false ground, bootleg ground, or cheated ground receptacle? 

Can multiple neutral or ground wires be secured under the same terminal in an electric panel? 

Is an ungrounded electric receptacle outlet dangerous?

Is there an adapter that can be placed on a two-slot (ungrounded) receptacle to make it safe? 

How can I tell if the electric receptacle outlets are grounded? 

• Are light switches required to be grounded? 

What is the main bonding jumper and where do it find it in an electric panel? 

• When was metal water pipe banned as the sole ground electrode for a house electrical system? 

• What do ground wires look like? 

When was the three-slot (grounding) outlet/receptacle first required?

When was it first required that 240-volt receptacles for a clothes dryer and range be four slot (equipment ground connection)? 

When was pool bonding first required by code?

What is the difference between "grounded" and "grounding" electrical conductors? 

• Why are most or all the receptacle outlets ungrounded in my house?

What is a ground wire? 

• What is the difference between neutral and ground wires? 

• Should the ground slot of a receptacle outlet be on the top or bottom?


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