Best Answer

Answer for USA, Canada and countries running a 60 Hz supply service.

This is very common in commercial and industrial installations. You must be sure that your two breakers are fed from different phases or legs of your electrical service. Having both circuits fed from the same phase or leg might cause the neutral to melt and cause a fire without tripping any breakers.


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.




User Avatar

Wiki User

โˆ™ 2011-04-06 02:47:07
This answer is:
User Avatar
Study guides
See all Study Guides
Create a Study Guide

Add your answer:

Earn +20 pts
Q: Is it a good idea to run two 20 amp circuits on their own 20 amp breakers but using only one 12 3 w gnd romex cable Only one white wire would be available for two different circuits?
Write your answer...
Related questions

What are the different access technological options available?

Dialup, DSL, Cable.

What is an ethernet cord?

An ethernet cable is used in computer and internet connections and is available in different lengths and is also called an Ethernet Cable

Where can a digital cable box be purchased?

If you are interested in purchasing a digital cable box, they can be purchased at many different stores. Cable providers such as Rogers and Bell would have them available.

How do you install an electrical circuits wiring using armored cable?

Same installation as non armored cable.

What are types of internet available connections?

DSL, cable, fibre internet connections. IVC has different plans for different homes. Check them out.

who provides high speed cable internet?

There are a few different companies that provide high speed cable internet. But, where you live depends on what companies are available. Verizon and Comcast are two nationwide high speed cable providers that are available to almost any area.

Why electrical cables are available in different diameter sizes?

The different electrical cable diameters are corresponding to the different electric currents that could be tolerated by the cables.

Is a 3 phase cable one circuit?

If it is powering a single 3 phase device and is protected by a single throw 3 pole breaker or disconnect, yes. If all three hots share one neutral, and supply different devices or circuits, breakers should be able to trip independently but would still have to disconnect all three phases together.

How is a DSL connection different from cable internet?

The most obvious difference between DSL and cable internet is speed, as cable is much faster. However, they are physically different in that a DSL connection is typically done through a phone line while a cable connection does not require this. DSL internet is usually cheaper and can be available in areas that cable is not.

How do you fix a short circuit in a pulley system?

Short circuits are typically associated with electrical circuits. Pulley systems are associated with mechanical cable and pulley lifting systems. The two are so different that the question does not make sense. Please restate the question.

What types of cable covers are there?

There are many types of cable covers available for all different types of needs. They make channeled cable covers that can protect cables so that you can drive over them. There are also cable covers that attach to the floor or walls.

You have charter cable and internet services what packages are available to you?

what cable and internet available to existing charter customers

What is the xlpe cable?

it is cross linked polyethylene cable just like PVC cable having current carrying capacity somewhat superior to that of PVC cable and is widely used in .6 to 1kV circuits

Why does NM B cable come in different colors and what does each color represent?

The color of the Romex&reg; NM Cable jacket were changed to aid in the inspection process. It speeds up the inspection process when the inspector doesn't have to check each cable to make sure it is sized accordingly. The color code is as follows: White- 14 awg for 15 amp circuits Yellow- 12 awg for 20 amp circuits Orange- 10 awg for 30 amp circuits

Is cable internet available in the countryside?

Cable internet is available in many places in this day and age. However, I cannot tell you if cable internet is available in your area, as I do not work for a cable internet provider. You will need to contact a cable internet provider in your area to find out if cable internet is available for you.

What are the different types of broadband internet access?

The main types of broadband internet access available are DSL, cable and fiber optic. DSL is delivered through a phone line while cable is delivered the same way as cable TV. Fiber optic is the fastest form of broadband available.

Pata data cable are available in two different type s the types distinguished by the number of conductors?

PATA data cables are available in two different types. The types are distinguished by the number of conductors. Which two types are available? (Choose two.)

Is sky cable only available overseas?

Sky Cable is only available overseas over in the Philippines. You must be a Philippines resident in order to get Sky Cable. Sky Cable has a lot of channels and packages to choose from.

Which cable internet service providers offer the lowest rates?

There are many different internet cable service providers available. You can choose from many and the cheapest ones are companies such as Rogers and Bell.

What is a good cable company that offers cheap cable service?

There are many great cable companies available. Some cable companies are only available in certain area's and they all have competitive pricing such as Comcast & Direct TV.

What is the minimum length available for a micro usb cable?

The minimum length available for a micro usb cable is 3 mm. The micro usb cable is considered to be far more durable that the mini usb cable. You can purchase a micro usb cable at Staples.

Is internet broadband available in Montana?

You'll probably have to choose satellite Internet service. High-speed DSL is not available in that area. Cable Internet is also not available except where cable TV is available.

What is the size of cable to be used for power circuits?

It depends on how much power is being used by the circuit.

What is the size of cable to be used for lighting circuits?

Typically residential and many commercial applications use a 15 amp service for lighting circuits. They use 14 AWG wire.

Are TV guides available for Foxtel cable?

"yes, as a matter of fact Foxtel Cable offers their tv guide in an electronic format. The channel lineups will be different depending on what part of Austrailia you live in."