MICS cables have higher current ratings than other cables, e.g. PVC or
rubber-insulated, of the same conductor size. Conversely, for a given current
rating, a MICS cable will usually have a smaller conductor size and overall
diameter. This is due to the high thermal conductivity of the magnesium
oxide insulation (which allows the heat generated in the cable conductors to
flow quickly from the cable) and the higher permissible operating
temperatures. However it is still necessary to check the voltage drop and in
many cases this, rather than the current rating, determines the cable size,
particularly whe
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