True Induction TI-4B Use And Care Manual page 20

Installation Instructions
The Induction Cooktops must connect to a separate, grounded wire, single
phase, AC Only electrical supply with their own circuit breaker. These
appliances must be installed in accordance with National Electrical Codes,
as well as all state, municipal and local codes. This appliance must be
supplied with the proper voltage and frequency and amperage, which is
protected by a properly sized circuit breaker or time delay fuse.
The cable from appliance is equipped with 3-wires:
IMPORTANT: Use the 3-wire cable from Home Power Supply where
local codes permit a 3-wire connection.
Red Wire
Green Wire
(Grounding)
3-Wire Cable from Home Power Supply
Cable from Power Supply
Cable from Appliance
18
Black Wire
Junction Box