How many additional supports are required between supports #1 and #2 for a 26-foot length of MC cable?

To determine the number of additional supports required for a 26-foot length of MC (metal-clad) cable, it's essential to understand the National Electrical Code (NEC) guidelines regarding cable support. According to NEC, MC cable must be secured and supported every 6 feet, and also within 12 inches of every connection or termination.

For a 26-foot cable length, we can calculate the number of supports needed. The first support is at the start of the cable (support #1), and then supports should be installed no more than 6 feet apart. Thus, to cover the entire length of 26 feet, we need to consider how many 6-foot intervals are within that span.

• The first support is required at the starting point (0 feet).

• The next supports would be required at each increment of 6 feet, leading to placements at 6 feet, 12 feet, 18 feet, and 24 feet.

• In total, you could have supports at these intervals: 0, 6, 12, 18, and 24 feet.

Counting from the first support at 0 feet to the last required support just before reaching 26 feet, you note that you would need