I know the maximum number of bends in emt is 360 before a box of condulet must be installed.
My journeyman on my job also believes that you cannot have more than a 90 degree bend in emt. In otherwords, it would be a violation to take a stick of emt and over bend a 90 to lets say a 120 degree bend. I could not find anything in article 358 to support this. -erik w.
I once had a helper that thought you could put up to 360 degrees of bends between fittings.
Actually that is exactly what the code wording said up until the '90 code. In the '90 code cycle a proposal pointed out that a coupling is a "fitting" per the Article 100 definition and that the code permitted up to 360° between "fittings". The '90 code replaced the word "fitting" with the words "pull point". This problem occurred because of a difference in the "code meaning" and the "field meaning" of the word "fitting". In the field this word is normally accepted to mean a "conduit body" and that was the intent of the usage in the code prior to 1990, but when you apply code rules you must always use the code meaning of the terms so the code rule was changed to make the rule match the code meanings and to make it enforceable. Don
Don, Here, in the field a "fitting" never was thought to be only a "conduit body". Try 1942 from IAEE "American Standard Definitions of Electrical Terms" Fitting: "A fitting is an accessory (such as a locknut or bushing) to a wiring system that is intended to perform a mechanical rather than an electrical funtion" When did it change, and then change again??
[This message has been edited by electure (edited 03-23-2003).]
electure, What do the electricans in your area mean when they say "fitting"? In this area it means something like a LB or a T. I've never heard a field electrican call a coupling or a locknut a "fitting". Don
Don, Electure and I are from the same area and I have to agree with him. A “fitting” to an electrician around here is a coupling or connecter. I guess it's just one of those terminology differences in different parts of the country.
its amazing how fast one can produce a total of 360 deg. i recently did a rough in involving a concrete slab. had a 90 (pvc) up into the panel and a 90(pvc) up into the wall at a recpt box location. had to offset each riser(emt) in order to attach to their respective boxes. offsets only 2" to 3" not a difficut pull however more than 360 deg. i imagine each of the offsets = 90 deg.