NAIM 300 Serie Manual De Instrucciones página 12

6. Mains Power
Use only the mains leads and plugs supplied or the Naim Power-Line mains cable.
Where fused plugs are used 13 amp fuses should be fitted. Do not wire voltage
dependent resistors or noise suppressors into mains plugs. They degrade the
mains supply and the sound.
6.1 Mains Plug Wiring
In some territories a mains plug may need to be fitted to the supplied mains
lead. As the colours of the wires in the mains lead may not correspond with the
coloured markings identifying the terminals in the plug proceed as follows:
The wire coloured GREEN-AND-YELLOW must be connected to the terminal in
the plug marked by the letter E or by the safety earth symbol or coloured GREEN
or GREEN and YELLOW.
The wire coloured BLUE must be connected to the terminal in the plug marked
with the letter N or coloured BLACK.
The wire coloured BROWN must be connected to the terminal in the plug
marked with the letter L or coloured RED.
6.2 Equipment Fuses
Mains powered Naim Audio equipment is fitted with a mains fuse on the
rear panel adjacent to the mains input socket.
Replace it if necessary only with the spare fuse supplied or with an
identical fuse. Repeated failure of the fuse points to a fault that should be
investigated by your retailer or Naim itself.
6.3 Non-rewirable Mains Plugs
If a non-rewirable plug is cut from a mains lead (for whatever purpose) the
plug MUST be disposed of in a way to render it totally useless. Considerable
shock hazard exists if the cut-off plug is inserted into a mains outlet.
6.4 Mains Circuits and Cables
A hi-fi system usually shares a mains circuit with other household equipment
some of which can cause distortion of the mains waveform. This distortion
can in turn lead to mechanical hum from mains transformers. Some Naim
transformers are large in size, making them relatively sensitive to such
distortion, and it may be necessary to take account of transformer hum when
siting your equipment.
Transformer hum is not transmitted through the speakers and has no effect on
the performance of the system; however, a separate mains circuit may reduce
it. Such a circuit (ideally with a 30 or 45 Amp rating) will also generally
improve system performance. Advice on the installation of a separate mains
circuit should be sought from a qualified electrician.
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