Ricoh A251 Operating Instructions Manual page 147

Connect the copier to a power source meeting the specifications given on the inside front cover
of this manual.
Do not set anything on the power cord.
Voltage must not fluctuate more than 10%.
Make sure the copier is grounded.
Make sure the plug is firmly inserted into the power outlet.
Make sure the power outlet is close to the copier and easily accessible at all times.
Access To Machine
Place the copier near a power source and provide clearance as shown.
Left
600 mm
(24")
62
Back
600 mm (24")
Front
1000 mm (40")
Right
600 mm
(24")