A. One inch.
49. Q. Should the electrode be raised up to 1½ inches, what might happen?
A. If the copper electrode was run at a point so near the clutch, the intense heat of the arc might do damage to the top carbon holder and clutch.
50. Q. If the dash pot should be found stuck, would you put oil in it?
A. Coal oil should be used to clean and cut the dirt out of the pot and from off the plunger, but after the dash pot and plunger have been cleaned all oil should be wiped off of same, as the oil would cause the plunger to collect dirt and stick.
51. Q. If one carbon of lamp should "jig or pound", what can be done to stop it?
A. If the carbon jumps or pounds the electrode, it is evident that the iron armature is too far out of the solenoid, or the speed is too low.
52. Q. Does the pounding of the lamp occur with the old series wound machines or with the new compound wound machines?
A. The pounding of the lamp occurs with the new compound wound machines.
53. Q. If the copper electrode was fusing, how would you know it?