How many Strain Supports are required for a 350' raceway?

To determine the number of strain supports required for a raceway, it's essential to consider the general industry standards regarding the spacing of these supports. Strain supports are used to secure raceways and cable trays, ensuring they are stable and can handle the weight of any cables or equipment housed within them.

Typically, the National Electrical Code (NEC) or similar guidelines provide criteria for how often you should place supports based on the length of the raceway and the weight it is carrying. For example, supports may be recommended every 10 to 15 feet for raceways, depending on the specific installation requirements and conditions.

Given these considerations and taking into account a 350-foot raceway, the calculation for the number of supports would follow the spacing guidelines. If we assume a mid-point frequency for supports, you would calculate the number of supports needed based on the total length divided by the spacing distance. For a typical spacing of about 10-15 feet, you would find yourself needing approximately 24-35 supports over the entire length.

However, it is common practice to round this figure to make sure the proper support is present at critical points, especially at the start and end of the raceway and potentially near transitions. Consequently, having 4 supports