British General 45A Matt black Cooker Switch. For your safety, electrical products must be installed in accordance with local building regulations. If in any doubt, or where required by the law, consult a competent person who is registered with an electrical self-certification scheme.. This British General switched raised screwed graphite black cooker switch with neon is rated to 45A. It uses a 240V power supply for installation and use with electrical circuits within the home. Cooker Switch with Neon by British General.