Talonewo
Senior Member
Two questions that may or may not be related.
I have a steel boat so galvanic corrosion and Electrolytic corrosion are a concern. I have been reading "Motorboat Electrical and Electronics manual" by John Payne trying to learn as much as I can. In the Electrolytic corrosion section under Ground Faults on page 212 it says; "In any area where a cable can contact grounded metal, leakage or fault currents can flow. Install a leakage test lamp unit such as a Mastervolt that handles both AC and DC. This allows the hull to be monitored continuously and any problems can be rectified promptly". Maybe you can Google better than I but I can't find a "leakage test lamp" anywhere on the internet.
Thinking through this issue brought me to my second question. My DC panel is large and wired such that just about everything has it's own circuit breaker on the panel and it has indicator lights next to each circuit breaker so when the CB is on there is a little red light next to it... I have noticed for some items when I turn off the CB the little light immediately goes out but for other things the light slowly dims then goes out taking 3-4 seconds. The indicator lights are wired directly to the output side of the CB and to a ground bus bar on the backside of the panel.
Are the lights next to the CB the "Leakage test lamp"? I always assumed they were just indicators saying the CB was on. Is how fast the light goes out linked to some type of ground fault or leak in the wiring?
I have a steel boat so galvanic corrosion and Electrolytic corrosion are a concern. I have been reading "Motorboat Electrical and Electronics manual" by John Payne trying to learn as much as I can. In the Electrolytic corrosion section under Ground Faults on page 212 it says; "In any area where a cable can contact grounded metal, leakage or fault currents can flow. Install a leakage test lamp unit such as a Mastervolt that handles both AC and DC. This allows the hull to be monitored continuously and any problems can be rectified promptly". Maybe you can Google better than I but I can't find a "leakage test lamp" anywhere on the internet.
Thinking through this issue brought me to my second question. My DC panel is large and wired such that just about everything has it's own circuit breaker on the panel and it has indicator lights next to each circuit breaker so when the CB is on there is a little red light next to it... I have noticed for some items when I turn off the CB the little light immediately goes out but for other things the light slowly dims then goes out taking 3-4 seconds. The indicator lights are wired directly to the output side of the CB and to a ground bus bar on the backside of the panel.
Are the lights next to the CB the "Leakage test lamp"? I always assumed they were just indicators saying the CB was on. Is how fast the light goes out linked to some type of ground fault or leak in the wiring?