Not DIY but something I was wondering.
Is it normal in a petrol station to have all the lighting circuits protected by a single 30mA RCCB? I mean canopy lights, lamp posts, shop lighting, fascia lights. Everything.
It doesn't feel right, when many of these circuits would be susceptible to tripping and would therefore stop the whole business from trading.
Also, do metal halide lamps take increasing startup surge as they age? I have had electricians out several times recently to upgrade breakers as it seems the electrician that wired the place had an abundance of B6 and B10 breakers. But these are starting to cause problems. The B10s are on the canopy lights, each one has 4 x 250w halides and an LED feature light. One has been swapped for a C10 as it kept tripping. Each lamppost (also 250w halides) is on a B6, again both have recently been changed for a C6. Bad design or ageing lamps?
Is it normal in a petrol station to have all the lighting circuits protected by a single 30mA RCCB? I mean canopy lights, lamp posts, shop lighting, fascia lights. Everything.
It doesn't feel right, when many of these circuits would be susceptible to tripping and would therefore stop the whole business from trading.
Also, do metal halide lamps take increasing startup surge as they age? I have had electricians out several times recently to upgrade breakers as it seems the electrician that wired the place had an abundance of B6 and B10 breakers. But these are starting to cause problems. The B10s are on the canopy lights, each one has 4 x 250w halides and an LED feature light. One has been swapped for a C10 as it kept tripping. Each lamppost (also 250w halides) is on a B6, again both have recently been changed for a C6. Bad design or ageing lamps?