On Friday, May 5, 2017 at 11:40:01 AM UTC-4, dpb wrote:
On 05/05/2017 8:57 AM, Taxed and Spent wrote:
Contractor wants to monitor commercial tenant's current load throughout
the day for a month or two to see max load, and thus see how much of the
1000 amp panel capacity is left for a future second tenant.
...

Any other suggestions?

Ask the utility if they'll do it for him.

As another said, rent the gear for a month; there are all kinds of
outfits that do such.

On the cheap, use a single phase clampon meter with a usb port and a
laptop...

--

and another way is to look at the equipment that the tenant has and add up the current of the stuff you figure might be on at the same time

m