We want to install an electric furnace in our 1200 sq. Foot house but have a 100amp new service , do we have to upgrade to a 200amp and what is involved and the approx. Cost to upgrade . In Nl. Canada

You'll almost definitely have to upgrade.
The cost is area specific. Calling around to get estimates is the only way to get an accurate answer to that one.

What is involved in the upgrade , do the whole house have to be rewired ? Please spesify as much as you can exactly what I need to buy . Thank you

Considering what you are asking and how you are asking it, what is involved is getting two or three quotes from qualified electricians and pick the one you feel the most comfortable with to do the job.
You don't need to buy anything. The electrician that does the job will know exactly what to get.

Thanks for your reply , we are trying to get some idea of the approx. cost of materials or what we will have to buy before we call an electrican , we are on a fixed income and would like some idea of a cost before we decide. We live 2 1/2 hrs, from town and would have to hire someone from town to do the job .A rough idea would be great. Thanks again

A phone call or two to a couple of local, or local as possible, contractors will be the best method of answering your question.

Labor rates and materials costs, overhead, profit, etc. are very local variables. Unfortunately, we do not have any Canadian electricians here to be more specific.

As long as you hire an electrical contractor, you need not purchase anything but his services, via a detailed contract.

Contractors should be able to buy materials at much less cost than homeowners, sure plus some markup for profit.

They should also be able to choose the exact proper materials, the first time. There are so many various parts that may be or should be used, Each home and electrical service, while all similar, are very much different and unique.

Any price or estimate you may get here will be a SWAG, scientific wildass guess.

Thank you again for your reply but I am no further ahead or wiser than when I first contacted you people , all I asked was what exactly would we have to replace to upgrade.thank you !

No, you asked what you would have to buy.

please spesify as much as you can exactly what I need to buy
What gets replaced is everything from the connections at the utility service drop, all the way down to the panel and breakers, and also grounding and bonding.

I am not sure what more we can tell you beyond what has already been said. I know you are looking for specific answers, but anything anyone here, or anywhere else on the web, can tell you will be a very vague guess.

A 200A service upgrade here in the states would run anywhere from $1500US to $3500US, possibly higher.

Thank you very much , one more question please , does that include replacing all the wire throughout the house as well , we had a new 100amp service installed last year . Thanks again !

That's a shame you did not think my answer was helpful, since I answered these specific questions:


Thanks for your reply ,
we are trying to get some idea of the approx. cost of materials

or what we will have to buy before we call an electrican ,

we are on a fixed income and

would like some idea of a cost

before we decide. we live 2 1/2 hrs, from town and would have to hire someone from town to do the job .A rough idea would be great. thanks again

No, you should not need to rewire the entire home, but without knowing the age and condition of the wiring, I cannot be sure.

But the entire electrical service needs to be changed, to include the conduit and wire on the exterior of the home, assuming an overhead service, the meter socket, conduit to the panel, and the panel.

All the cables that leave the panel to the home wiring should be able to remain, unless you have a very old home with very old wiring.

Not sure how much more I could help.