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Answer for USA, Canada and countries running a 60 Hz supply service.For a 200 amp service table 310.16 from the NEC is used. This shows that 3/0 cu wire is suitable for 200 amps with an insulation factor of 75 degree C or 210 amps with an insulation factor of 90 degrees C. The neutral may be able do be downsized depending on whether or not harmonic loads exist (i.e. nonlinear loads such as computers). The utility company will run the wire from their transformer to your meter disconnect and meter socket.

Another thought

Be careful. This question can have more than one valid answer. For instance, table 310.16 may apply in some circumstances, but if the 200A service in the question happens to be a single-phase service in a dwelling, there is a different table (310.15(B)(6) just for the purpose of sizing service conductors in that case. It indicates that 2/0 copper OR 4/0 aluminum would be the correct choice.


As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.




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โˆ™ 2010-05-27 03:38:59
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Q: What gauge of service wire should you run for a 200A service to a meter box and service panel?
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Related questions

What gauge of cooper service wire for 200A service to meter box and service panel?


What size cable is used for house wiring?

Copper SE cable gauge 00 from the meter socket to the breaker panel for a 200A service. Then 8, 10, 12, and 14 gauge wire depending on the load.

What size ground wire for a 200 amp service panel to the water meter?

#6 should be fine...Canadian Code anyway....

How much does it cost to move an electricity meter?

The meter is typically installed in the main circuit panel of the house. If you want to move it, you can do it as part of a service / panel upgrade. We did this when we moved into our new house - we replaced the 1950s vintage main circuit panel and 100A service with a newer 200A panel and service. It was about a grand, but we didn't actually move the panel from where it was, so it may cost more for what you want.

200 amp electric service Do you ground the meter pan and the circuit panel?

Ground the meter base only if it's a duplex. Otherwise, ground at the main switch or panel.

How do you tell the meter amperage of your homes electric meter?

Your main breaker should tell you the amps of your panel.

I am wiring a circuit in my shop to run a MIG welder that draws a max of 30 amps The run is approximately 40' from the service panel What gauge wire should be used for this circuit?


Does a 2007 acura tl require premium gas?

yes. 90% of newer acura's require it. It should be in the service manual as well as on the instrument panel where the gas gauge is. " Premium unleaded only"

What size bonding jumper for 200 amp service panel?

There is no bonding jumper wire required on a 200 amp service panel. The meter stack is metallic and is continuous from the mast head down to the distribution panel. If you are talking about the ground wire for a 200 amp panel it requires a #6 bare copper conductor that connects the grounding rod or plate to the neutral point in the distribution panel. Assuming the answer above is an example of a service, where the meter is stacked above the first service disconnect and is mated to this panel by a threaded hub. However if your meter were to be mounted beside your first service disconnect and a metal nipple with lock nuts were used for raceway. You would be required to have a bonding jumper on that nipple sized according to NEC Table 250.122. So for 200 amp that would be #6 copper or #4 aluminum.

Should you ground the neutral bus bar to the service panel?

Yes, but only at the main panel, not subpanels.

What size grounding wire do you use as the 4th wire running in your conduit from your 200 amp meter box to your 200amp service panel this is the ground wire from box to box?

You do not use a ground wire in the connection from the meter base to the distribution panel. A bonding wire may be required if the service is using PVC conduit.

What is the cable between the service panel and electric meter called?

Whether you have an overhead or underground feed, that section of the installation is referred to as Service Entrance Conductors. On an overhead installation, it includes the conductors on BOTH sides of the meter, from the service drop conductors (attached at the service head) to the service equipment LINE terminals. On an underground installation, it refers only to the conductors between the meter's LOAD side and the service equipment LINE terminals. The conductors on the LINE side of the meter come from a distribution transformer and are unbroken between the transformer and your meter.

Can more wires be ran from the meter base to supply a shop from your house?

No, you cannot put but one set of wires in a meter base. The way to go about this, is to mount an outside panel beside your meter base. Panel sized to existing house service, equipped with two main breakers. One to re-feed the house panel the other to feed your shop.

Can you have a100amp meter put in a 200amp breaker box?

If indeed you have a 100 amp rated meter, it should not be placed on the service conductors feeding a 200 amp panel. You are more likely to have a problem with conductor size than with the meter. If the utility company is supplying only 100 amp service, the conductors probably are not large enough to safely carry 200 amps.

If you change out a 60amp meter with a new 100amp meter would the wiring still be big enought to carry the 100amp?

No, on a service change all the wires have to be able to carry the current of the highest rated device. There are tow cables associated with your question. The one from the pole to the meter and the one from the meter to the main electric panel. The one to the meter is the responsibility of the power company and may well be large enough. Since it is in free air its current carrying capacity is not de-rated in the same way as the cable from the meter to your main panel. Since you will have to likely upgrade your main panel it is a good idea to replace the service entry cable to 100 A rating.

What gauge wire to use for direct burial for a garage that is 400 feet from your house?

Depends on the size of the sub-panel in that garage. If you are installing a 60 amp sub-panel 400 feet away from the main service panel then use AWG # 4.

Can you 14 gauge wire from the panel box to 12 gauge wire to the light?


When adding a sub-panel can you feed it from the service mains in the main panel or do you have to feed it with a separate breaker in the main panel?

It's much safer to feed it from a separate breaker rather than double lugging to the service. Also make sure you use the right gauge wire for the amperage of the breaker you're using to feed the sub.

What gauge wire do you need for 220v 100a power?

A 100 amp residential panel requires that you use AWG # 3 service entrance wire.

Can I install 200 amp panel using 200 amp meter?

A 200 amp meter has to be used on a 200 amp distribution panel. As to your ability of installing this service depends upon your skill, workmanship and knowledge of installing electrical equipment and to be able to get it inspected and passed by an electrical inspector.

Will temporary condensation harm an electrical panel?

Yes, it can cause shorts and corrosion. No moisture should ever be allowed to enter a service panel.

How do you calculate the main fuse for electrical wiring?

It needs to match the rating of the service and the panel itself. The panel will have an amperage rating and you should not exceed this.

What should an electrical panel rating be?

Depends on the load. Most residential homes require at the very least a 200 amp service panel.

What is the minimum service size for a 225amp residential service?

A 200 amp service panel with a 60 amp sub-panel.

What gauge wire is required for a 100A sub panel 84 feet from 200A main service?

NEC 310.16 #3 Thhn Copper

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