WAZER Pro and 208V Supply

In the 60hz region, the 220-240V split phase for WAZER Pro is achieved by combining two Hot/Legs/Lines of 120V at antiphase. But not all power supply has split-phase set up pre-installed. Sometimes 208V is measured between two legs/lines. So, it is safe to be used for WAZER Pro?

The answer is a bit more complicated, because it depends on how the 208V is generated.

If you 208V is a single phase supply generated from a Delta 3 phase supply, See picture below:

• This is not what WAZER Pro can handle.

• WAZER Pro 60hz can only operate in a 220-240V Split Phase supply, which is generated using different wiring methods. See picture 2

• Split phase 220-240vac is the recommended power set up for WAZER Pro. 

• If WAZER Pro is connected to the single phase 208V supply, the GFCI inside the machine will be damaged immediately and the whole machine will be inoperable. 

If you are using a Wye connection in your supply. See picture below

• The WAZER Pro will be safe to operate under 208V. 

• The limiting factor is the GFCI. There are 2 hot/live go into the GFCI.  

• Make sure each hot is less than 140V to the ground.

• The GFCI will not function if hot-to-ground voltage is higher than 140V. 

The most ideal supply is still a Split Phase 220-240V. It is generated as the schematics shown below.

• If you have both 240V split phase AND 208V Wye, use the 240V split phase, it is preferable.

• Only use 208V Wye if you don't have 240V split phase.

• Using 208V Wye connection will have slightly higher current consumption when compared to the split phase.

Consult a licensed electrician about the wiring set up in your facility, before attempting to connect the WAZER Pro to the power.