The E9D runs off a household dryer or stove receptacle.  

BTU's: 30 K

CFM's: 350

Power Source: 240V, NEMA 14-50P plug

Amperage Draw: 25-37.5

Width: 12"

Length: 23"

Height: 18.3"

Weight: 40 LBS

please view links below for NEMA connector info 

NEMA Chart

20-30AMP WIRING INSTRUCTIONS

20-30AMP LOCKING PLUG AND CONNECTORS

HOW MANY BTU'S OF HEAT DO YOU NEED?

CALCULATE HERE : Heat Requirement - Cantherm Distributors