AC might be a threat but DC doesn't seem to be...DC current's one-way
positive to negative and you're probably too resistant. In our APBA
racing series we ran up to 144v, recovering drivers and boats
(partially to fully sunken) without any sense of current or threat.
We also had an entrant show up at kilos with a 240v pack that freaked
out rescue crews and officials and got us limited to 144v by APBA.
Some months later, when the boat's controller bypassed as the driver
was heading out on a test, the boat jumped straight up like a salmon,
dumping the driver. Several of us went in immediately to recover the
boat and driver. We felt no active current, and our only problem was
gaining control of the still running boat (the driver hadn't attached
the kill lanyard to his life-jacket). The lanyard and copper kill chip
are required to shut down the system in a crash or driver departure.
The one pictured below is mounted on a 100+ mph electric drag bike.
I'm currently reworking international rules for electric boat racing,
and among proposed changes are resetting voltage classes to balance
chemistry outputs, and adding a superclass at about 250v
John
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