Hitachi CHROMASTER 5160 Instruction Manual page 229

Grounded 3P power
outlet (15 A)
750 mm or
more below
ground
300 mm
2 mm
10 mm
(Example of grounding
electrode)
(a) Usual Grounding Connection (with grounded 3P power
outlet)
Ground resistance
100 Ω or less
Grounding electrode
(underground section)
Grounding construction f
100 Ω or less
Appended Fig. 1-1 Grounding Method
APPENDIX 1 - 5
Grounded 3P
table tap
Power cord
(attached to
instrument)
or
Chromaster
Organizer
Connector
Rear panel