Hitachi CHROMASTER 5160 Instruction Manual page 170

Grounded 3P power
outlet (15 A)
750 mm or
more below
ground
2 mm
10 mm
(Example of grounding
electrode)
(a) Usual Grounding Connection (with grounded 3P power
outlet)
Ground resistance
100  or less
Grounding electrode
(underground section)
300 mm
Grounding construction
for 100  or less
Appended Fig. 1-1 Grounding Method
APPENDIX 1 - 5
Grounded 3P
table tap
Chromaster
5110/5160 pump
Organizer or
AC adapter (option)
Rear panel
Connector