Electrical Question from Ralph about Electrical Service Upgrade
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Question: My wife and I bought a fixer upper mobile home that needs the electrical upgraded. We are upgrading the service to 150 amps. © By: Dave Rongey |
Electrical Question from Ralph about Electrical Service Upgrade
Received from Ralph a Contractor in Queensbury, NY
[ad#block]Question: My wife and I bought a fixer upper mobile home that needs the electrical upgraded. We are upgrading the service to 150 amps. The line that comes into the mobile home has 4 wires, I am assuming three are hot and 1 is a ground. Question is, do I have to replace the service entry wire so that it is a 3 wire entry because the 150 amp box only has three spaces for wires to the main breaker which I assume is two hot and a ground?
Dave’s Reply:
Thanks for your electrical question.
Please do not assume ANYTHING! Especially with Mobile or Modular Homes.
These types of homes require a totally isolated Ground and Neutral wire from the electrical service point of entry and then throughout the electrical wiring system.
This system is 2-Hots, 1-Neutral and 1-Ground. The Neutral and Ground wires may NOT be bonded for the circuits in the home, only at the main electrical service panel.
When upgrading to a larger electrical service this will require new service wires that are sized to the capacity of the new electrical service.
Please consult a Licensed Electrical Contractor to do this for you. This will require a permit and inspection. You can find qualified electricians by using the link below.
The Following links will assist you with your electrical question:
For more information about Wiring Diagram
Wiring Diagrams
This link is helpful as a Contractor
Electrical Code Articles
Make sure not to miss these Resources for: How-To-Videos
Electrical Videos
Be Careful and Be Safe – Never Work on Energized Circuits!
For Best Results Consult a Licensed Electrical Contractor.
Locate An Electrical Contractor in Your Area
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