Depending on the size of your boat you may need more than one. Boats less than 26' have to have at least one B-1 fire extinguisher on board. Boats 26'-40' need to have at least two B-1 fire extinguishers on board.
Graphite is an electric conductor, consequently, useful in such applications as arc lamp electrodes. It can conduct electricity due to the vast electron delocalization within the carbon layers (a phenomenon called aromaticity).
Report Abuse. Aluminum is a good conductor of electricity. A common material that isn't conductive is glass but glass will conduct heat. Wood isn't heat conductive or an electricity conductor but has a low combustion point.eport Abuse. Aluminum is a good conductor of electricity. A common material that isn't conductive is glass but glass will conduct heat. Wood isn't heat conductive or an electricity conductor but has a low combustion point.