Hello Andrew,
I have on board my EV since 75 a CO2 extinguisher which is normally use for
removing the air from a fire of burning combustibles, but it may not in some
cases put out a electrical arc in energized equipment. In this case, you
need a substance that will coat the energized surfaces to stop the arc which
is a dry power type C extinguisher.
I have never had a electrical arc sustain more than a second between on cell
and the side of a aluminum battery case which was grounded. This happen
when I turn on the charger and I quickly turn off the charger and unplug the
AC main plug.
In some cases, just turning off the circuit breaker may not do it, because
the ground path is still connected.
In electrical fire in electrical equipment and cabinets, we first turn off
the power and we like to use the CO2 where it is easier to clean up.
In a battery that is energized all the time and the case is busted open,
then a dry power class C extinguisher is prefer. If the fire is on the
surface of the batteries which was initial cause by a arc and the case and
surrounding material is burning than it's prefer to remove the air by a CO2
extinguisher.
To remove the initial arcing on batteries then try the dry chemical type,
but if the fire has spread to combustibles, then use the CO2.
Roland
----- Original Message -----
From: "Andrew Wood" <[email protected]>
To: "EVDL" <[email protected]>
Sent: Wednesday, November 10, 2010 1:22 AM
Subject: [EVDL] Fire Extinguishers for batteries
> Is it best to use a CO2 or a dry powder extinguisher on batteries (Li ion
> or lead acid)? Or does it not really matter?
>
> Regards
> Andrew
>
> Sent from iPhone
>
> _______________________________________________
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_______________________________________________
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I have on board my EV since 75 a CO2 extinguisher which is normally use for
removing the air from a fire of burning combustibles, but it may not in some
cases put out a electrical arc in energized equipment. In this case, you
need a substance that will coat the energized surfaces to stop the arc which
is a dry power type C extinguisher.
I have never had a electrical arc sustain more than a second between on cell
and the side of a aluminum battery case which was grounded. This happen
when I turn on the charger and I quickly turn off the charger and unplug the
AC main plug.
In some cases, just turning off the circuit breaker may not do it, because
the ground path is still connected.
In electrical fire in electrical equipment and cabinets, we first turn off
the power and we like to use the CO2 where it is easier to clean up.
In a battery that is energized all the time and the case is busted open,
then a dry power class C extinguisher is prefer. If the fire is on the
surface of the batteries which was initial cause by a arc and the case and
surrounding material is burning than it's prefer to remove the air by a CO2
extinguisher.
To remove the initial arcing on batteries then try the dry chemical type,
but if the fire has spread to combustibles, then use the CO2.
Roland
----- Original Message -----
From: "Andrew Wood" <[email protected]>
To: "EVDL" <[email protected]>
Sent: Wednesday, November 10, 2010 1:22 AM
Subject: [EVDL] Fire Extinguishers for batteries
> Is it best to use a CO2 or a dry powder extinguisher on batteries (Li ion
> or lead acid)? Or does it not really matter?
>
> Regards
> Andrew
>
> Sent from iPhone
>
> _______________________________________________
> | REPLYING: address your message to [email protected] only.
> | Multiple-address or CCed messages may be rejected.
> | UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> | OTHER HELP: http://evdl.org/help/
> | OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
>
_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev