Will this work on 4/0 wire?

Yes I personally used it on 750MCM which is 5 times the diameter of 4/0. This is a great phase rotation meter.

Does it work on 480-V delta and wye systems?

Yes. It has worked perfectly on all systems and all voltages up to and including 480 for us. Excellent tool and much safer.

Will this work on the output of a VFD?

It should as long as the VFD is running (being commanded to go a direction at 50-60 HZ)

Can this be used on single phase 240 volt service?

Hi, phase sequence is only used to determine the correct phasing of the 3 phase supply. You need not use this device for single phase at all. You only need a volt meter to ensure that the supply is in order in terms of L N E.

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⚡ Power up your phase testing game with precision and style!

BUILT TO LAST - Double molded ABS housing ensures rugged durability on every job site.
COMPACT LIGHTWEIGHT - At just 140g and pocket-sized, it’s the perfect tool for on-the-go professionals.
EFFORTLESS CONNECTIVITY - Wide-jawed alligator clips provide secure, easy attachment to cables of all sizes.
HIGH VOLTAGE CONFIDENCE - Accurately tests phase sequence and status up to 600VAC—engineered for demanding environments.
VISUALIZE WITH PRECISION - Large LCD delivers clear graphical phase orientation for instant insights.

The Extech480400 Phase R is a compact, battery-powered electrical testing tool featuring a large LCD that graphically displays phase orientation and sequence. It safely tests voltages up to 600VAC and is housed in a durable double molded ABS casing. Equipped with wide-jawed alligator clips, it offers reliable connectivity and ease of use for professional electricians and engineers.

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AR$215294

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Manufacturer	Extech
Part number	480400
Item Weight	140 g
Product Dimensions	6.86 x 3.18 x 12.96 cm; 140 g
Batteries	1 Product Specific batteries required.
Item model number	480400
Size	Phase Sequence r
Color	480400
Style	480400
Material	ABS
Power source type	Battery Powered
Item Package Quantity	1
Number Of Pieces	1
Display Style	LCD
Specification met	CE
Batteries Included?	No
Batteries Required?	No

Extech480400 Phase r

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