Overhead range wiring question?

Question

I can't figure this out. I'm installing a new overhead range hood above my stove. I took down the old one and put up the new one. One black wire, one white wire, and one ground. The two blacks go together, the two whites together and the groung goes under the green groung screw.
I'm feeling good about my self, I go down to flip the fuse back on and it trips. I keep trying and everytime I try to turn the fuse back on it keeps tripping. Never had a problem with the old hood so I'm shaking my head.

The only difference between the two hoods is that the new one is 1.7 amps and the old one was 2.1amps. In the basement the, the fuse that they are on is 15 amps.

Can somebody help me out.....:(

Andrew

Great points by everyone.
I tried unhooking the wires and tried every possible sequence one at a time but no luck. I also had my cable clap pretty snug so I loosen that off a bit also.
It was still tripping everytime. :(
There was no room to pull more wire down so I had to take to whole hood down.
I looked at the wires and did not see any nicks or anything like that. The wire nuts also were on pretty good. I played around with it and got it working!
So it was shorting out somewhere but can't find out where. There is a bit of a bend where the wire comes out of the wall, down through the cable clamp and into the hood. This where I think the problem is.
I'm just going to tape everything up good tomorrow, screw the hood back up, hook up the wires and keep my fingers crossed.

Thanks to everyone for all the trouble shooting suggestions!
Andrew

Answer 1

The amperage is no problem. The fuse is 15 amps to cover a bunch of uses on the circuit and it is more than big enough (in fact your new one uses less electric).

Your procedure of black-black, white-white, green ground is perfect.

The only problem I can think of is something equivalent to what the first responder said. It is not what you did but how you did it. Shut off the circuit and stare at those three wires to see if anything is obviously wrong (wire nut off and live wire touching ground or sharp edge cutting through insulation of live wire). If you see a problem fix it right then. Otherwise while power is off disconnect those three wires. Flip the switch on and all should be OK with fuse not popping. Then shut off the circuit and put only the green one on. Flip the switch on and it should not blow. Repeat that next with the white and then with the black. Whichever point you have the fuse popping again is the one you did a bad job on.

Answer 2

The circuit breaker says you have a short or have miswired it. While what you did sounds appropriate, sometimes people who did the original wiring may have done something "creative" with the wiring. If possible use a tester to check to see if black is the hot wire, and white is ground. Usually white and green are *both* wired to the ground bar in the circuit box, but not if the person was creative. If the wiring is ok then you will have to check for shorts.

Additional note: always use wire nuts *and* tape the wire nuts to the wires with black electrical tape.

Answer 3

Lot's of good answers in here. Check the wires were they come into the box, this is where you might have a nick, it happens when the wires get stressed by bending from the removal and replacement of the oven...

Answer 4

Double check the wiring connections. One may have come loose and is shorting out. Also you can try swapping the black and white wires. That shouldn't make a difference but it is possible.

Answer 5

I bet one of the wire nuts came off and the bear wire is touching metal. Re-chek your connections

Answer 6

As aussie said your wire nut connection(s) may have come undone or you may have tightened the romex connector too tight and caused a short at the connector.