
RACO
Frequently asked questions
Common questions about RACO from 3G Electric.
What materials are RACO grounding bushings typically made of?
RACO grounding bushings are commonly constructed from iron with a zinc-plated finish, as seen in models like the MPN 1294 (3 1/2-inch trade size) and MPN 1215 (1 1/4-inch trade size). The iron provides mechanical strength for securing conduit, while the zinc plating offers corrosion resistance. Some bushings are insulated, featuring a non-conductive lining to prevent galvanic corrosion between dissimilar metals. These bushings are designed for use with heavy-wall RMC and medium-wall IMC metal conduit, with NPS threaded female connections.
Are RACO surface mount clamps suitable for outdoor use?
RACO surface mount clamps, such as the MPN 1304 for 1-inch trade size, are constructed from electroplated iron with a gray finish. The electroplating provides a degree of corrosion resistance, making them suitable for indoor and sheltered outdoor applications where exposure to moisture is limited. For direct outdoor exposure, additional corrosion protection or stainless steel alternatives may be required. These clamps are designed for IMC and RMC conduit and are installed with screws for secure mounting.
What is the difference between RACO reducing bushings and grounding bushings?
RACO reducing bushings, like the MPN 1155, are used to transition between different conduit trade sizes—for example, reducing from 2-inch to 1 1/4-inch. They are made of steel with a zinc-plated finish and have a female-to-male NPS thread configuration. Grounding bushings, such as the MPN 1294, serve a dual purpose: they provide a mechanical connection for conduit and include a bonding lug or clamp for grounding continuity. Grounding bushings are often insulated to prevent corrosion and are required in certain code applications for equipment grounding.
Do RACO hubs come with insulated throats?
Yes, RACO rigid/IMC hubs, such as the MPN 1716 with a 4-inch trade size, are available with insulated throats. The insulation is a non-conductive lining that protects conductors from abrasion at the hub entry point and prevents galvanic corrosion between the conduit and the enclosure. These hubs feature NPT threads and are constructed from zinc. They are listed for use with RMC and IMC conduit and are commonly used in service entrance and panelboard applications.
What standards do RACO electrical boxes comply with?
RACO electrical boxes, including models like the MPN 911-9 (steel box without clamps or bracket) and MPN 189H (4-inch square box with narrow bracket), are manufactured to meet UL and CSA standards. These boxes are cULus listed, indicating compliance with both U.S. and Canadian safety requirements. They are designed for use in dry or damp locations, depending on the specific box type, and are suitable for mounting in walls, ceilings, or floors as per local electrical codes.
Can RACO box covers be used with any brand of electrical box?
RACO box covers, such as the MPN 848 (6-gang blank cover for rectangular boxes), are designed to fit RACO boxes of matching shape and dimensions. While they may be compatible with other brands that adhere to standard box sizes (e.g., 4-inch square or rectangular), it is recommended to verify fitment based on the box's screw hole spacing and overall dimensions. The cover is made of steel with a galvanized finish for corrosion resistance and is intended for use in dry locations.
























