User Manual

The AC plug on your new 20 Amp Furman product is a NEMA 5-20P. The blades are oriented

perpendicular to each other to disnguish the 20 Amp plug from the more familiar 15 Amp

plug, the NEMA 5-15P which has two parallel blades. All products that are rated for 20 Amps

must use the perpendicular blade plug to obtain a UL (Underwriters’ Laboratory) safety lisng.

We recognize that using an unfamiliar plug may be an inconvenience to our customers, but this

is a maer of public safety.

So where do I plug in the NEMA 5-20P?

Devices with a NEMA 5-20P plug will require a 20 Amp or higher rated circuit. Please noce

NEMA 5-20R receptacles have one T-shaped contact that can accept either the horizontal

parallel blade or the vercal perpendicular blade. According to the Naonal Electrical Code, if

one wishes to ulize loads in excess of 15 Amps, the electrical wiring, circuit breakers, and receptacles must

be rated at least 20 Amps. Locaons without 20 Amp receptacles should be inspected and upgraded to the

proper NEMA specicaon by a licensed professional. The NEMA 5-20P (Plug) is designed to be used with a

NEMA5-20R (Receptacle), prey simple – right?

Is there any alternative?

Yes! You may adapt the NEMA 5-20P to a 15 Amp outlet with the intenon to draw no more than 12

Amperes connuously. Furman has designed the ADP-1520B in compliance with UL specicaons just for

this purpose. Please contact your Furman dealer to verify the ADP-1520B is right for your applicaon. In a

business locaon, a local re inspector may not allow the use of adaptors deemed noncompliant. The safety listed ADP-1520B would be a

worthy consideraon in such instances.

The ADP-1520B is UL and CSA compliant.

OK, suppose I use an improper adapter with a 15A outlet and then I draw 20

Amps anyway. What will happen?

Probably nothing serious, since most commercial and many residenal circuits are at least 20 Amps. However, some residences do

use 15 Amp circuits; if you aempt to draw more than 12 Amps, the circuit breaker on the ADP-1520B will “trip”. In order to avoid this

inconvenience, check the electrical service panel, locate and conrm the size of the breaker installed, if the 12A breaker trips reduce the

load to below 12 Amperes. Avoid repeated nuisance trips which can result in damaged equipment or in extreme cases re. Note nuisance

trips can be an indicaon of electrical faults in equipment or the electrical system, yet usually it’s due to high current draws

What Kind of Plug is This, Anyway?

15A outlet 20A outlet

15A outlet 20A

outlet

P-8 PRO C