
Enclosure Lifting

Lifting eyes and angles, in conjunction with a spreader bar and shackles, are designed for overhead lifting of enclosures. The use of shackles instead of hooks is preferred and the angle between the top of the enclosure and the chain or cable must be at least 45 degrees. Spreader bars and slings must be designed for the specific application and must be in compliance with regulations established by OSHA, ASTM, ASME, ISA and other governing agencies.
Hoffman Lifting Eyes are used for lifting PROLINE modular frames and for fastening PROLINE top accessories to the frame. The lifting eyes thread into corner blocks in a frame and are available in sets of four.
Hoffman Lifting Angles are used to provide the best load distribution while lifting enclosures with up to 1000 pounds of equipment and cabling in each bay. The angles mount to the top of the enclosure frame corner blocks and do not require removal of the top cover for installation. The kit includes two angles and four bolts and washers.
Hoffman Panel Lifting Hooks are used to lift a large interior panel to position it in an enclosure lying on its back and to transport a panel from one location to another.
Hoffman Panel Support Kits provide additional support for panels on which heavy components are mounted. Each panel support fits over a color stud and is then adjusted so the weight of the panel is partially supported by the bottom of the enclosure. A polyethylene-covered base on each panel support distributes the panel weight and prevents damage to the interior finish. Locknuts prevent accidental change in adjustment.
Products
Cutouts are very common when modifying enclosures for push buttons, indication lights, conduit entries or mounting hardware. Cutting into an enclosure runs the risk of eliminating the protective nature of the NEMA rated attributes. Proper steps must be followed in order to preserve the NEMA rating of an enclosure.
Devices mounted to the enclosure must have the same NEMA rating as the enclosure. This means that if the devices are installed to the manufacturer's specifications, they will be able to maintain the NEMA rating of the enclosure.
Water tight conduit hubs must be used when running wire through a cutout in an enclosure. There are many different types of conduit hubs that are used to secure conduit to an enclosure. However, only certain conduit hubs are rated for a watertight seal. By using water tight hubs, the NEMA rating of the enclosure is maintained.
Bonded washers are necessary when mounting hardware to an enclosure. If standard mounting hardware is used, the NEMA rating of the enclosure will no longer be maintained. Bonded washers have rubber gaskets that make a watertight seal around the drilled hole. It is also important to make sure the material used for the bonded washer matches the material of the enclosure. Stainless steel enclosures require stainless steel bonded washers.