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Question DetailsAsked on 7/10/2013

How much does it cost to upgrade an otherwise functional electrical panel from 60amps to 100amps?

We'll also need:
1. to reverse one outlet where the hot and neutral wires were reverse and
2. to update two prong outlets throughout the home to three prong outlets.

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OK - several issues here:

1) Under your question, there is a link for Home > Electrical. If you click on that, in the most recent questions, in the last couple of pages, you will find several similar questions and detailed answers on the panel upgrading issue and typical costs.

2) I would question why upgrade to 100 Amp capacity versus the current standards of 200 (or 300 A if using electric heat and water heating, or very large A/C unit or high-demand shop outlets for air compressors or welders), unless your electric service will not support that load. Even then, if your main service line (from power company transformer to your house) and electric meter requires upgrading, most power companies will do that for free or very cheap, figuring they will recoup the cost in future power usage billings. It will cost very little more to upgrade all the way to what a buyer might expect for the house, because in all probability you are going to need to upgrade your current installation all the way back to the meter - the main breaker, trunk feed to the interior breaker (or in your case maybe fuse) box, and the breaker box itself.

3) Reversing outlet wires is a 5 minute job, including walking there from the breaker box and back

4) replacing outlets with 3-prong might cost about $10-25 each depending on how many you have, ASSUMING you have 3-wire feed to the boxes. If you have 2 wire feed without a ground wire, then a separate ground will have to be run, and that will cost probably more like $150-300/box. At that point, if you have old wiring in the house (especially if aluminum, cloth-insulated, post and tube, smaller than 12 gauge on 20A outlets, or 16 or 18 gauge at all), I would go ahead and rewire the entire house as long as you are essentially doing that for the new ground wire anyway.

5) Since you had one swapped connection, unless you know how to check this yourself, I would have the electrician check all switches and outlets for correct wiring, and make sure appropriate GFCI breakers are installed on all garage, outdoor, hot tub or sauna or pool area, and bath and kitchen outlets.

Answered 5 years ago by LCD




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