To celebrate Independence Day, we will close Friday, July 3rd through Sunday, July 5.
We will resume our normal business hours 8:00AM until 4:30PM MST on Monday, July 6.
Orders placed through this web site after 3PM on Thursday, July 2, will be shipped on Monday, July 6.

Welcome to Quick 220 Systems

Diamond H Company LLC, doing business as Quick 220 Electrical Systems, was formed in Arizona in 1994 to develop equipment that produces 220-240 volts from 110-120 volt outlets.

Our 20th Year!

220-240 volts from 110-120 outlets

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About Voltages

220 volts, 230 volts and 240 volts are used interchangeably in North America to describe the same voltage range.
Similarly, 110 volts, 115 volts and 120 volts all describe the same voltage range.

Quick 220 Voltage Converting
Power Supplies

Power US, Canadian, or International
220-240 volt equipment
from 110-120 volt outlets.
Up to 20 amps or 4800 watts output.
Light weight, small, portable, easy to use.

Digital Volt Meter

Measure voltages with one hand
7 to 690 volts AC/DC
Light - less than 7 ounces
Continuity and phase rotation check

Power Cords

Extension Cord,
110-120V, 20A, 25 feet,
NEMA 5-20 plug and receptacle.

Power Strip 220 230 240 Volt
International Sockets

Connect electrical equipment
from UK, Europe, Asia, North America, South America, Australia and Africa
to US/Canadian style
220/240 or 110/120 volt outlets.

Plug Adapters

Adapter cord,
NEMA 5-15 plug
to NEMA 5-20 receptacle.