Professional Home Inspector February 2018

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PROFESSIONAL HOME INSPECTOR

February 2018

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David Clark

"Dedicated To Training & Information For The Professional Home Inspector"

This month's Tech Tip is about Electric Sub-Panel Inspection and the reason why the neutrals and grounds must be separated.

We have changed the forum link in the right column to our new website: www.homeinspectortrainingonline.com. This site is full of training and installation videos for home inspectors. Check it out!

The 7th annual Niagara Frontier Home Inspectors Conference was a huge success! Thanks to all the home inspectors who attended and the great sponsors and trainers! Check out some pictures from the event below and save the date for 2018; October 19-20

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  • HAVE YOU ENLISTED IN HOME INSPECTOR BOOT CAMP? SIGN UP TODAY FOR THIS FREE ON-LINE TRAINING FROM THE PRIVACY OF YOUR HOME OR OFFICE by CLICKING HERE. Here is what you will learn:
  • Effective Marketing Techniques used by successful home inspectors.
  • Professional report writing
  • Free on-line training resources!

CLICK HERE To Sign Up Today


Is It Possible to Document a This Month's Tech Tip: Roof Inspection in Under 5  Minutes? Click Play to find out 

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Electrical Sub-Panels - Why MUST the neutrals & grounds be separated


As home inspectors we know that the grounds and neutrals must be separated in any sub panel. We also know that a sub panel should be supplied from another electric panel with 4 conductors. I have had "electricians" tell me that that code is overkill and unnecessary. I have heard different explanations on the reasons for this. I have also heard "electricians" say the neutral does not carry current. CLICK HERE for a great video showing a live demonstration. Let's start with that neutral wire, which is actually a current carrying conductor.  Because the neutral conductor appears to have no voltage because there is no resistance. However if a person becomes part of the circuit, the voltage will form across thier body. In a electrical circuit all of the current from the hot conductors will travel on the neutral conductors back to the service panel. If we bond the ground wire to the neutral in the sub panel, current will flow on both the neutral and ground. If the ground and neutral conductors are not kept separated, current will flow on the ground wires back to the panel supplying the sub panel. In addition to the dangers (shock hazards) of current flowing on the ground conductors, it could cause equipment interference, cause issues with GFCI’s. Another issues is magnetic fields not cancelling themselves out because the return current has multiples paths, the current remaining in the neutral will not counterbalance the current in the hot wire.  The resulting imbalance creates a magnetic field that can interfere with sensitive electrical equipment. If metal conduit is included, the imbalance will induce current into the conduit, and could cause the conduit to overheat.  According to the NEC (National Electric Code), you can only have one connection between the ground system and the neutral system, and that must be at the Main Service Panel. This is also important for the proper operation of Over Current Protection Devices.

The 2018 Niagara Frontier Home Inspectors Training Conference in beautiful Niagara Falls NY - October 19-20, 2018 - CLICK HERE for more Information and to register

12 hours of approved New York State, InterNACHI, & ASHI continuing education.

Here are some pictures from the 2017 sold out Niagara Frontier Home Inspectors Training Conference....

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THANK YOU 2017 CONFERENCE SPONSORS!

  • HomeBinder
  • Guardian Financial
  • Joe Ferry
  • AccuStar Labs
  • Secure24 Promos -ADT
  • United Infrared
  • Wohler
  • Vanguard Emergency Management
  • EMSL Analytical
  • WNY Alliance of Home Inspectors
  • InterNACHI
  • inspectcheck.net
  • Zonolite Attic Insulation Trust
  • North American Mold Professionals Association (NAMPA)
  • Inspector Pro Insurance
  • Monroe Infrared
  • Rad Elec
  • NY Radon Response
  • Healthy Homes Education & Consulting
  • Inspector Services Group
  • Mike Crow / Mastermind
  • 2017 Niagara Frontier Home Inspectors Training Conference Trainers

Peter Hopkins

Michael Menz

Andrew Stone

Mel Shaw

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