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tc768

04:07AM | 04/18/02
Member Since: 04/08/01
14 lifetime posts
Bvelectrical
I recently moved into an older home where the fusebox appears to have been rewired within the last 10 years. There is no central a/c so we use window units in the upstairs bedrooms. When 2 or more a/c's run at a time it blows the fuse. I believe that all the sockets on the 2nd floor run to the same 20 amp fuse. Can i upgrade the fuse to 30a or more and how can I determine that the wiring can handle the additional load or is it a rewire of the fusebox ???



rpxlpx

05:27AM | 04/18/02
Member Since: 03/13/00
1675 lifetime posts
Sounds like a rewire, but first you must make sure the service from the power company will support your power requirements. Some older homes do not have sufficient "drops" from the power company to support AC. Call the power company or get an electrician to determine this.
Then, the fuse box might not support another 20-amp circuit. That's the next thing to verify. It might need to be replaced with a (circuit breaker) box that can handle the load.


electricmanscott

03:02PM | 04/18/02
Member Since: 11/05/01
98 lifetime posts
DO NOT "upgrade" to a 30 amp fuse under any circumstance, this will be the the furthest thing from an upgrade you could do. I would be suspect of the 20 amp fuse in a building that is old enough to have fuses. I would venture a guess that it possibly should only be a 15. You really should call in an electrician for this. Your best bet would be to wire a couple of new circuits for the ac's. If the fuse panel can hande it.

[This message has been edited by electricmanscott (edited April 18, 2002).]

[This message has been edited by electricmanscott (edited April 18, 2002).]

BobF

01:51AM | 04/19/02
Member Since: 10/19/98
223 lifetime posts
If you upgrade to a 30a, make sure your family is living elsewhere. Make sure all valuables are out of the house. Upgrade your insurance. Then collect the insurance when the house burns down.
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