OVATION 5X00070G02 Thermocouple module

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(d) On roofs that exceed 50 feet in width, additional conductors are to be provided to interconnect the air terminals required to protect large flat areas. One additional conductor for each 50 feet in width is necessary. For example, on roofs 50 to 100 feet wide, add one additional run; on roofs 100 to 150 feet wide, add two additional runs; etc. These additional runs must be interconnected together and to the perimeter conductor at 150-foot intervals with cross conductors as illustrated in figure 3-17. (e) Maintain a horizontal or downward course with roof conductors. Provide "U" or "V" (up and down) pockets with a down conductor from the base of the pocket to ground or to a convenient lead of the main down conductor. (f) Route conductors through or around obstructions which lie in a horizontal plane with the conductor [figure 3-23(b) and (c)]. Bends in the conductor should not include an angle of less than 90 degrees and should maintain a radius of 8 inches or greater [figure 3-23(d)]. In particular, re-entrant loops should be avoided. When routing around obstructions, wide gradual bends are preferred. Other recommended practices are illustrated in figure 3-23(e) through (h).

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