a. Two workers should be used in stringing services from a transformer pole where
primary jumpers energized at 5,000 volts or more extend below the secondary wires.
b. When a worker is making connections to secondary buses, the neutral wire should be
connected first and energized wires connected last. The procedure should be reversed when
188.8.131.52 Aerial Testing. Testing of transformers, autotransformers, and similar equipment
should be performed by qualified personnel under appropriate engineering guidance. All
temporary leads used in testing, such as secondary leads of potential transformers, thermometer
leads, and recording voltmeter leads, should be securely supported on the pole and should clear all
traffic. The positions of these leads should not interfere with the climbing space or with
maintenance work which may be required while the testing is in progress.
Tree Trimming and Brush Removal
Comply with the requirements of OSHA standard 29 CFR 1926.296r,
Line Clearing, Tree Trimming Operations. Tree trimming and brush
removal is done to maintain the integrity of electric lines and apparatus
and provide right-of-way clearance.
7.13.1 Tree Trimming Training Qualifications
Live-line tree trimming should not be done. If live-line tree trimming
needs to be performed, and is authorized by the Public Works Officer or
other designated authority (per local designation), provide and ensure the
use of appropriate protective barriers and comply with the requirements
of OSHA standard 29 CFR 1910.269(r), Line Clearance Tree Trimming
Operations. The worker should be qualified to do tree trimming.
7.13.2 Tree Trimming Public Safety. Erect suitable signs and barriers to prevent the
public from passing under trees in which personnel are working and to prevent stumbling over
brush on the ground. Brush should not be piled on sidewalks nor left on streets and highways
7.13.3 Tree Trimming Tool Safety. Raise and lower tools with a handline. Only saws
and pruning knives or shears are used for cutting limbs. Do not carry unnecessary tools up the
tree. Tools should not be hung or stored on tree limbs.