What are spacer bolts ?
Spacers are unthreaded sleeves that fit over bolts or screws to maintain space between components.
What are neutral links ?
Ground and neutral. ... As the neutral point of an electrical supply system is often connected to earth ground, ground and neutral are closely related. Under certain conditions, a conductor used to connect to a system neutral is also used for grounding (earthing) of equipment and structures. They usually come in 7 way neutral, 10 way neutral, 13 way neutral with a blue PVC base OR they come half meter / 1 meter bar