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10-25-2014, 12:32 AM   #1
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Pentax D-BC 90 Battery Charger


I was wondering if the adapter plug for the D-BC 90 rated at 7A 125V, can be swapped out for another (canon adapter plug) that is rated 2.5A 250V?

Thank you for taking the time to read my thread.

10-25-2014, 07:03 AM   #2
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QuoteOriginally posted by BokehSotong Quote
I was wondering if the adapter plug for the D-BC 90 rated at 7A 125V, can be swapped out for another (canon adapter plug) that is rated 2.5A 250V?
I'm assuming you are talking about the AC cable that attaches to the charger.

In general, the 250V 2.5A cable should not be used in place of the other (because it supports less Watts), but in case of connecting the D-BC90, the cable should be fine, in case you are using it to plug it into a 240V socket. I'm not sure how many Amps the D-BC 90 will draw exactly, but it will be below 2.5A at 250V.
10-25-2014, 07:55 AM   #3
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The cable for the D-BC 90 here is UL and CSA listed NISPT-2. 18AWG
( reading the fine print on the cable)
That means it is insulated and jacketed, 2 core, of copper cross section 0.824mm.
The cable has to be rated to reduce risk of fire or exposed live conductors in the improbable event that there is a direct short circuit in the cable or at the input of the device (D-BC 90)
In that case the cable must carry a fault current so that the upstream fuse or circuit breaker opens before the cable reaches a temperature at which its plastic insulation becomes unsafe (eg 105 Celsius)

The C7 (figure 8 connector) molded on to the cable here is stamped 125V 3Amp
However the IEC 60320-1 Appliance Couplers specification rated the C7 at 2.5 Amp with a maximum pin temperature of 70 Celsius.

The D-BC 90 is rated 0.2 Amp input current.
10-25-2014, 08:51 PM   #4
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Thank you both for your reply.

Yes, its for a 240v socket. That's a relief then that it is fine.


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