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#18104 - 12/06/02 12:21 AM Need advice  
electrical dummy  Offline
Junior Member
Joined: Dec 2002
Posts: 4
I bought an older house/cottage which has 2-wire service from the utility pole. My panel is a Cutler-Hammer model which has 2 60-amp breakers (connected with a bar) as the main disconnect. There is also a 240v electric range wired to the panel.
How is this possible? I have read that 2-wire service only allows for 120v service. The range is connected as follows: a red and a black wire connected to a twin breaker (looks just like the main disconnect), and a white neutral connected to the neutral bus.
What kind of service do I have? 60A or 120A? 120V or 240V?
Thanks


Work Gear for Electricians and the Trades

#18105 - 12/06/02 12:27 AM Re: Need advice  
Wirenuttt  Offline
Member
Joined: Nov 2002
Posts: 267
Massachusetts
I beleive your right without looking at it. You have an old 120 volt system which originally was probably a 30 amp service. Whoever tied those 240 volt appliances in, cheated. I highly recommend that you replace this to at least a 100 amp service which includes a grounding system. I'm surprised the home inspector didn't notice this. If you don't have the majority of your major appliances on gas u may want to consider 200 amp service. Hope this helps


#18106 - 12/06/02 12:33 AM Re: Need advice  
caselec  Offline
Member
Joined: Apr 2002
Posts: 558
San Jose, CA
Are there 2 insulated wires and 1 bare wire feeding your house? Or 1 insulated wire and 1 bare wire?


Curt Swartz

#18107 - 12/06/02 12:40 AM Re: Need advice  
electrical dummy  Offline
Junior Member
Joined: Dec 2002
Posts: 4
There are 2 insulated wires and 1 uninsulated wire. I assumed that the uninsulated wire is only there to provide physical support to the insulated ones. Is this actually a neutral, and I have 3-wire service?


#18108 - 12/06/02 12:49 AM Re: Need advice  
sparky66wv  Offline
Member
Joined: Nov 2000
Posts: 2,236
West Virginia
<jumping in>
Yes, the bare cable is indeed the grounded conductor or "neutral".

You have a 120/240V service.

</jumping in>

[Linked Image]

Didn't mean to barge in when it suddenly became an easy answer!


-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI

#18109 - 12/06/02 12:54 AM Re: Need advice  
electrical dummy  Offline
Junior Member
Joined: Dec 2002
Posts: 4
Cool.
Is it 120 amp service then, based on the main disconnect as I described above?


#18110 - 12/06/02 01:34 AM Re: Need advice  
sparky66wv  Offline
Member
Joined: Nov 2000
Posts: 2,236
West Virginia
No, most definitely a 60A, the current remains consistant, unless there are 2 double pole breakers tied together, a la GE 200A, but it would be plainly marked at the correct current rating.

I agree with the above posts that an upgrade to 200A should be considered.

[This message has been edited by sparky66wv (edited 12-06-2002).]


-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI


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