Double oven

[conman]

I am installing a double oven

It requires a 220V 38max amp circuit. I am planning on using a 40Amp double pole breaker.

My question is : I am running 3/4 inch conduit for the run with8awg wire. I want to know if I need to run 3 wire (2 hot and 1 nuetral) or 4 wire (2 hot, 1 neutral, 1 ground) or will the conduit suffice as the ground.

- Conman

[mdshunk]

I am installing a double oven Congrats!

It requires a 220V 38max amp circuit. I am planning on using a 40Amp double pole breaker.Sounds good so far...

My question is : I am running 3/4 inch conduit for the run with8awg wire. I want to know if I need to run 3 wire (2 hot and 1 nuetral) or 4 wire (2 hot, 1 neutral, 1 ground) or will the conduit suffice as the ground.Well, that depends on the specific model of wall oven that you're installing. Some need the neutral and some don't. You mentioned that the oven is 220. The date plate will say either 240 volts or it will say 120/240 volts. If it says "120/240", then you need the neutral. Have you purchased the oven yet? The pigtail piece of flexable conduit will be the tip off whether you need the neutral or not. Look at the pigtail on the wall oven and see if it has a neutral. If it has one, you need to pull one.

As for the ground. Yes, technically if you make up all your conduit connections very well you can use the conduit as the ground path. BUT... this circuit only requires a #10 gauge ground anyhow, so why not pull one?

[conman]

Yes thanks.

The oven is 240V. It has 4 wires black, red, white and green. The manual states that in some juristictions it is ok to bond the green and white together and run just a neutral, others require a neutral.

So, I will run 3 wire 8AWG and a 10AWG ground.

I notice in my panel that the service is broken up as follows : on the left bonding bus, the large neutral is connected. On the right bus, a thinner wire is connected (must be ground).

I notice that my neutral wires for all the circuits in the house are connected in either bus, with no real rime or reason to it.

If I wire the above circuit, does it matter which side I put the nuetral and which side I put the ground???

- conman

[Wgoodrich]

IF this is a main service rated panel then all the grounding and neutral bars must be electrically connected and you may intermix where you put grounding and neutral wires to those bars. This is only true in the main service rated panel serving the entire home.

Anything after leaving a main service rated panel whether a feeder, subpanel, or branch circuit must be with an insolated insulated neutral conductor never touching the grounding system again on the load side of the main service rated panel. Inside the main service rated panel both grounding and neutral are intermixed. That is the only place this is done.

Wg