All main switching at Hunterston was carried out at 132,000 volts in a switch house situated at teh rear of the site and some distance from the turbine hall.

The 132kv switchgear was housed indoors because of the exposed nature of the site and the risk of flash over being caused by salt deposits on the insulators. The indoor housing also facilited maintenance.

The connections from the generator transformers to the main switchgear were by 132,000 volt oil filled pressure cable
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