Re: Measure 100 amps with 10 amp meter ?
In the end it doesn't really matter whether you have a DMM in current or voltage mode or a panel meter or what, you still need to buy/make a very low value high power shunt for the meter. You don't want anything much over 0.001 ohms just because of heat dissipation.
Again I'd suggest using a length of 10-12 (or thicker) gauge wire as the shunt. If you can get a known value current source from a power supply, you should be able to make your own shunt to work very accurately with whatever meter you choose.
There usually several power shunts made for this purpose on ebay also.
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