This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Describe how a main gas valve gets electrical power to open. What will be an ideal ... (Read 26 times)

misspop

  • Hero Member
  • *****
  • Posts: 540
on: Jul 26, 2018
Describe how a main gas valve gets electrical power to open.
 
  What will be an ideal response?

Question 2

If there is a 240 V circuit that will be carrying 30 amps using 10 wire size, what is the maximum length of the two wire run that would limit the voltage drop to 3?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

millet

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 26, 2018
Answer to Question 1

Pilot gas is fed to the assembly and burner orifice. The spark electrode is positioned to ignite the gas on a signal from the room thermostat. With the pilot ignited and burning, a sensing probe establishes an electric current sufficient to energize a relay that opens the main gas valve by closing normally open electrical contacts. At the same time the relay's normally closed electrical contacts in the spark ignition circuit open, terminating the spark. As long as the sensing probe recognizes the pilot flame, the relay coil will be energized, and normally closed contacts in the spark ignition system will remain open.

Answer to Question 2

115 feet


misspop

  • Member
  • Posts: 540
Reply 2 on: Jul 26, 2018
YES! Correct, THANKS for helping me on my review

patma1981

  • Member
  • Posts: 292
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

How solar-energy power works How solar-energy power works
An open circulatory system. An open circulatory system.
To maintain global power requires the continuous development of weapons. Shown here is the Osprey. ... To maintain global power requires the continuous development of weapons. Shown here is the Osprey. ...
A plastic MAP sensor used for training purposes showing the electronic circuit board and electrical ... A plastic MAP sensor used for training purposes showing the electronic circuit board and electrical ...
Politics, Power and the Common Good: An Introduction to Political Science, 5/E Politics, Power and the Common Good: An Introduction to Political Science, 5/E
Regurgitation or insufficiency valve disease Regurgitation or insufficiency valve disease
Video: Digestive System Animation

For a complete list of videos, visit our video library