Denyo DCA-150LSKE, Instruction Manual

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(3) Precaution in grounding
①
Select a shady and highly moist place, and burry the grounding rod in such way
that its top end is completely hidden in the ground.
②
If burying the grounding rod on the place that many pedestrians walk on, clamp
the lead wire to prevent catching on it.
③
If the lead wire is not long enough for the connection, connect it as directed
below:
1) Connect the lead wire and the extension wire by soldering or sleeve coupling
securely and apply insulating tape to the connection.
2) Do not burry the connection in the ground.
④
Avoid the places within 2m of lighting conductor grounding location for burying
of grounding rod.
⑤
Do not use a telephone set grounding conductor.