Questions: when are insulating bushings required on conduits? Answer: Where raceways contain conductors 4 AWG and larger, the conductors must be protected from abrasion during and after installation by a fitting that provides a smooth, rounded insulating surface, such as an insulating bushing 300.4(f). For IMC and RMC, a bushing must Read details
(408) 866-7890
(408) 866 7890
This is what they had to say:
“Wow! I am amazed how Edward explains the code sections in plain English. Now I can understand what the sections talk about”
C. Johnson (CJ)“I am very confident about taking the residential electrician test.”
M. James“I have taken other classes but by far LearnNEC is the best. Edward explains the code sections in plain english and made sure that I understood before moving on.”
J.Rodriguez“Thanks Edward, I passed my journeyman test.”
R. Lester“My son was enrolled in your October class. He passed his general electrician test last week”
K. Palmer
Copyright © · Learn NEC