sec.247Other explosion-protected electrical plant

### sec.247 Other explosion-protected electrical plant This section applies to explosion-protected electrical plant supplied with electricity by a trailing cable, other than plant— mentioned in sections 245 and 246 ; or fitted with an automatic methane detector; or having explosion protection category Ex ia. If a general body concentration of methane of at least 1.25% is detected around the plant, the person detecting the methane must immediately switch off the electricity supply to the equipment’s trailing cable. (sec.247-ssec.1) This section applies to explosion-protected electrical plant supplied with electricity by a trailing cable, other than plant— mentioned in sections 245 and 246 ; or fitted with an automatic methane detector; or having explosion protection category Ex ia. (sec.247-ssec.2) If a general body concentration of methane of at least 1.25% is detected around the plant, the person detecting the methane must immediately switch off the electricity supply to the equipment’s trailing cable. - (a) mentioned in sections 245 and 246 ; or - (b) fitted with an automatic methane detector; or - (c) having explosion protection category Ex ia.