
EMT
Frequently asked questions
Common questions about EMT from 3G Electric.
What trade sizes of EMT conduit does 3G Electric stock?
3G Electric lists standard EMT conduit in trade sizes 1/2 in, 1-1/4 in, 2 in, 2-1/2 in, 3 in, and 3-1/2 in, each in nominal 10 ft lengths. The 304 stainless steel EMT sections are listed in 1/2 in and 2 in trade sizes. Trade size refers to the nominal internal diameter used for fitting selection, not the actual outside diameter. For a complete raceway, select fittings and couplings that match the trade size and the conduit material. If a required size is not shown, contact 3G Electric with the trade size, finish, and quantity for a quote.
What is the difference between the galvanized steel and 304 stainless steel EMT options?
The standard EMT conduit is made of galvanized steel with a gray finish, which is the common choice for indoor and protected outdoor raceway installations. The 304 stainless steel EMT is polished and gray in color, and is selected where carbon steel would be subject to corrosion, such as washdown areas, coastal environments, or certain chemical exposures. Both are supplied in 10 ft nominal lengths and are used to protect and route electrical wiring. Stainless steel typically carries a higher material cost. Confirm the finish and trade size against the project specification before ordering.
What fittings are available for EMT conduit from 3G Electric?
3G Electric supplies EMT fittings including elbows, clamps, and couplings. These are used to connect conduit sections, change direction, and secure the raceway to the building structure. Fittings must match the conduit trade size and material, and must be listed for the application. For example, a 2 in trade size EMT requires 2 in fittings. The catalog lists fittings by SKU and manufacturer part number so they can be cross-referenced with the conduit. When ordering, specify the trade size, fitting type, and quantity. Contact 3G Electric if a specific fitting configuration is not shown.
Can EMT conduit be used outdoors?
EMT is permitted in outdoor locations where it is installed per the applicable electrical code and is not subject to physical damage. The galvanized steel finish provides some corrosion resistance, but in coastal, washdown, or chemically aggressive environments, 304 stainless steel EMT may be more appropriate. Fittings and supports must also be suitable for the environment. EMT is not a flexible raceway and should not be used where movement or vibration is expected. For outdoor installations, verify the requirements of the authority having jurisdiction and consider the finish and support spacing.
What does the manufacturer part number on EMT conduit indicate?
The manufacturer part number identifies a specific EMT product by trade size, material, finish, and length. For example, part number 583229 corresponds to a 1-1/4 in trade size galvanized steel EMT conduit in a 10 ft length, while S10510CT00 corresponds to a 1/2 in trade size 304 stainless steel EMT conduit in a 10 ft length. These numbers allow cross-referencing with project specifications and submittals. 3G Electric lists the manufacturer part number for each SKU so buyers can confirm the exact item before ordering. If you need to match an existing part number, provide it when requesting a quote.
What is the nominal length of EMT conduit supplied by 3G Electric?
The EMT conduit listed by 3G Electric has a nominal length of 10 ft. This is the standard length for EMT and is the dimension used for estimating raceway runs and support spacing. Actual length may vary slightly due to manufacturing tolerances and coupling engagement. When planning a run, account for the coupling and fitting take-up. If a project requires a different length, contact 3G Electric to confirm availability. The 10 ft nominal length applies to both the galvanized steel and 304 stainless steel EMT options in the catalog.
