Code of Massachusetts Regulations
220 CMR - DEPARTMENT OF PUBLIC UTILITIES
Title 220 CMR 126.00 - Underground Electric Supply And Communication Lines 50,000 Volts And Below
Section 126.36 - Risers

Universal Citation: 220 MA Code of Regs 220.126

Current through Register 1531, September 27, 2024

(1) General

(a) All supply conductors or cables from underground systems which connect to overhead systems shall be protected by a covering which gives suitable mechanical protection up to a point eight feet above the ground.

Exception: Armored cables or cables installed in a grounded metal conduit and risers in fenced-in areas not accessible to the public.

(b) Supply conductors or cable should rise vertically from the cable trench with only such deviation as necessary to permit a reasonable cable bending radius.

(c) Exposed conductive pipes or guards containing supply conductors or cables shall be grounded in accordance with 220 CMR 126.31(5).

(2) Installation.

(a) The installation should be designed so that water does not stand in riser pipes above the frost line.

(b) Conductors or cables shall be supported in a manner designed to prevent damage to conductors, cables or terminals.

(c) Where conductors or cables enter the riser pipe or elbow, they shall be installed in such a manner that shall minimize the possibility of damage due to relative movement of the cable and pipe.

(3) Pole Risers -- Additional Requirements.

(a) Risers should be located on the pole in the safest available position with respect to climbing space and possible exposure to traffic damage.

(b) The number, size and location of riser ducts or guards shall be limited to allow adequate access for climbing.

(4) Padmounted Installations.

(a) Supply conductors or cables rising from the trench to transformers, switchgear, or other equipment mounted on pads shall be so placed and arranged that they will not bear on the edges of holes through the pad nor the edges of bends or other duct work below the pad.

(b) Cable entering padmounted equipment shall be maintained substantially at adequate depth for the voltage class until it becomes protected by being directly under the pad, unless other suitable mechanical protection is provided.

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